input
stringlengths
6
12
target
stringlengths
117
294
3459+937 =
< scratch > [3, 4, 5, 9] has 4 digits. [9, 3, 7] has 3 digits. [9] + [7] , C = 1, 9 + 7 + 1 = 16, A ->6, C -> 1 [5] + [3] , C = 0, 5 + 3 + 0 = 9, A ->9, C -> 0 [4] + [9] , C = 1, 4 + 9 + 1 = 13, A ->3, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 </ scratch > sum:4 3 9 6.
6764+296 =
< scratch > [6, 7, 6, 4] has 4 digits. [2, 9, 6] has 3 digits. [4] + [6] , C = 1, 4 + 6 + 1 = 10, A ->0, C -> 1 [6] + [9] , C = 1, 6 + 9 + 1 = 16, A ->6, C -> 1 [7] + [2] , C = 1, 7 + 2 + 1 = 10, A ->0, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 0 6 0.
135+85 =
< scratch > [1, 3, 5] has 3 digits. [8, 5] has 2 digits. [5] + [5] , C = 1, 5 + 5 + 1 = 10, A ->0, C -> 1 [3] + [8] , C = 1, 3 + 8 + 1 = 12, A ->2, C -> 1 [1] + [0] , C = 0, 1 + 0 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 2 0.
43+78 =
< scratch > [4, 3] has 2 digits. [7, 8] has 2 digits. [3] + [8] , C = 1, 3 + 8 + 1 = 11, A ->1, C -> 1 [4] + [7] , C = 1, 4 + 7 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 1.
836+1718 =
< scratch > [8, 3, 6] has 3 digits. [1, 7, 1, 8] has 4 digits. [6] + [8] , C = 1, 6 + 8 + 1 = 14, A ->4, C -> 1 [3] + [1] , C = 0, 3 + 1 + 0 = 5, A ->5, C -> 0 [8] + [7] , C = 1, 8 + 7 + 1 = 15, A ->5, C -> 1 [0] + [1] , C = 0, 0 + 1 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 5 5 4.
2297+7434 =
< scratch > [2, 2, 9, 7] has 4 digits. [7, 4, 3, 4] has 4 digits. [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [9] + [3] , C = 1, 9 + 3 + 1 = 13, A ->3, C -> 1 [2] + [4] , C = 0, 2 + 4 + 0 = 7, A ->7, C -> 0 [2] + [7] , C = 0, 2 + 7 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 7 3 1.
557+9098 =
< scratch > [5, 5, 7] has 3 digits. [9, 0, 9, 8] has 4 digits. [7] + [8] , C = 1, 7 + 8 + 1 = 15, A ->5, C -> 1 [5] + [9] , C = 1, 5 + 9 + 1 = 15, A ->5, C -> 1 [5] + [0] , C = 0, 5 + 0 + 0 = 6, A ->6, C -> 0 [0] + [9] , C = 0, 0 + 9 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 6 5 5.
188+895 =
< scratch > [1, 8, 8] has 3 digits. [8, 9, 5] has 3 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [8] + [9] , C = 1, 8 + 9 + 1 = 18, A ->8, C -> 1 [1] + [8] , C = 1, 1 + 8 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 8 3.
497+583 =
< scratch > [4, 9, 7] has 3 digits. [5, 8, 3] has 3 digits. [7] + [3] , C = 1, 7 + 3 + 1 = 10, A ->0, C -> 1 [9] + [8] , C = 1, 9 + 8 + 1 = 18, A ->8, C -> 1 [4] + [5] , C = 1, 4 + 5 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 8 0.
824+9535 =
< scratch > [8, 2, 4] has 3 digits. [9, 5, 3, 5] has 4 digits. [4] + [5] , C = 0, 4 + 5 + 0 = 9, A ->9, C -> 0 [2] + [3] , C = 0, 2 + 3 + 0 = 5, A ->5, C -> 0 [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 3 5 9.
988+6098 =
< scratch > [9, 8, 8] has 3 digits. [6, 0, 9, 8] has 4 digits. [8] + [8] , C = 1, 8 + 8 + 1 = 16, A ->6, C -> 1 [8] + [9] , C = 1, 8 + 9 + 1 = 18, A ->8, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [0] + [6] , C = 0, 0 + 6 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 0 8 6.
59+52 =
< scratch > [5, 9] has 2 digits. [5, 2] has 2 digits. [9] + [2] , C = 1, 9 + 2 + 1 = 11, A ->1, C -> 1 [5] + [5] , C = 1, 5 + 5 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 1.
65+2984 =
< scratch > [6, 5] has 2 digits. [2, 9, 8, 4] has 4 digits. [5] + [4] , C = 0, 5 + 4 + 0 = 9, A ->9, C -> 0 [6] + [8] , C = 1, 6 + 8 + 1 = 14, A ->4, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [0] + [2] , C = 0, 0 + 2 + 0 = 3, A ->3, C -> 0 </ scratch > sum:3 0 4 9.
7306+394 =
< scratch > [7, 3, 0, 6] has 4 digits. [3, 9, 4] has 3 digits. [6] + [4] , C = 1, 6 + 4 + 1 = 10, A ->0, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [3] + [3] , C = 0, 3 + 3 + 0 = 7, A ->7, C -> 0 [7] + [0] , C = 0, 7 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 7 0 0.
5766+54 =
< scratch > [5, 7, 6, 6] has 4 digits. [5, 4] has 2 digits. [6] + [4] , C = 1, 6 + 4 + 1 = 10, A ->0, C -> 1 [6] + [5] , C = 1, 6 + 5 + 1 = 12, A ->2, C -> 1 [7] + [0] , C = 0, 7 + 0 + 0 = 8, A ->8, C -> 0 [5] + [0] , C = 0, 5 + 0 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 8 2 0.
8993+326 =
< scratch > [8, 9, 9, 3] has 4 digits. [3, 2, 6] has 3 digits. [3] + [6] , C = 0, 3 + 6 + 0 = 9, A ->9, C -> 0 [9] + [2] , C = 1, 9 + 2 + 1 = 11, A ->1, C -> 1 [9] + [3] , C = 1, 9 + 3 + 1 = 13, A ->3, C -> 1 [8] + [0] , C = 0, 8 + 0 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 3 1 9.
8248+53 =
< scratch > [8, 2, 4, 8] has 4 digits. [5, 3] has 2 digits. [8] + [3] , C = 1, 8 + 3 + 1 = 11, A ->1, C -> 1 [4] + [5] , C = 1, 4 + 5 + 1 = 10, A ->0, C -> 1 [2] + [0] , C = 0, 2 + 0 + 0 = 3, A ->3, C -> 0 [8] + [0] , C = 0, 8 + 0 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 3 0 1.
852+359 =
< scratch > [8, 5, 2] has 3 digits. [3, 5, 9] has 3 digits. [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [5] + [5] , C = 1, 5 + 5 + 1 = 11, A ->1, C -> 1 [8] + [3] , C = 1, 8 + 3 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 1 1.
7652+4502 =
< scratch > [7, 6, 5, 2] has 4 digits. [4, 5, 0, 2] has 4 digits. [2] + [2] , C = 0, 2 + 2 + 0 = 4, A ->4, C -> 0 [5] + [0] , C = 0, 5 + 0 + 0 = 5, A ->5, C -> 0 [6] + [5] , C = 1, 6 + 5 + 1 = 11, A ->1, C -> 1 [7] + [4] , C = 1, 7 + 4 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 1 5 4.
9812+730 =
< scratch > [9, 8, 1, 2] has 4 digits. [7, 3, 0] has 3 digits. [2] + [0] , C = 0, 2 + 0 + 0 = 2, A ->2, C -> 0 [1] + [3] , C = 0, 1 + 3 + 0 = 4, A ->4, C -> 0 [8] + [7] , C = 1, 8 + 7 + 1 = 15, A ->5, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 5 4 2.
6878+95 =
< scratch > [6, 8, 7, 8] has 4 digits. [9, 5] has 2 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [7] + [9] , C = 1, 7 + 9 + 1 = 17, A ->7, C -> 1 [8] + [0] , C = 0, 8 + 0 + 0 = 9, A ->9, C -> 0 [6] + [0] , C = 0, 6 + 0 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 9 7 3.
49+2387 =
< scratch > [4, 9] has 2 digits. [2, 3, 8, 7] has 4 digits. [9] + [7] , C = 1, 9 + 7 + 1 = 16, A ->6, C -> 1 [4] + [8] , C = 1, 4 + 8 + 1 = 13, A ->3, C -> 1 [0] + [3] , C = 0, 0 + 3 + 0 = 4, A ->4, C -> 0 [0] + [2] , C = 0, 0 + 2 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 4 3 6.
84+5038 =
< scratch > [8, 4] has 2 digits. [5, 0, 3, 8] has 4 digits. [4] + [8] , C = 1, 4 + 8 + 1 = 12, A ->2, C -> 1 [8] + [3] , C = 1, 8 + 3 + 1 = 12, A ->2, C -> 1 [0] + [0] , C = 0, 0 + 0 + 0 = 1, A ->1, C -> 0 [0] + [5] , C = 0, 0 + 5 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 1 2 2.
3235+767 =
< scratch > [3, 2, 3, 5] has 4 digits. [7, 6, 7] has 3 digits. [5] + [7] , C = 1, 5 + 7 + 1 = 12, A ->2, C -> 1 [3] + [6] , C = 1, 3 + 6 + 1 = 10, A ->0, C -> 1 [2] + [7] , C = 1, 2 + 7 + 1 = 10, A ->0, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 </ scratch > sum:4 0 0 2.
92+1469 =
< scratch > [9, 2] has 2 digits. [1, 4, 6, 9] has 4 digits. [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [9] + [6] , C = 1, 9 + 6 + 1 = 16, A ->6, C -> 1 [0] + [4] , C = 0, 0 + 4 + 0 = 5, A ->5, C -> 0 [0] + [1] , C = 0, 0 + 1 + 0 = 1, A ->1, C -> 0 </ scratch > sum:1 5 6 1.
2135+79 =
< scratch > [2, 1, 3, 5] has 4 digits. [7, 9] has 2 digits. [5] + [9] , C = 1, 5 + 9 + 1 = 14, A ->4, C -> 1 [3] + [7] , C = 1, 3 + 7 + 1 = 11, A ->1, C -> 1 [1] + [0] , C = 0, 1 + 0 + 0 = 2, A ->2, C -> 0 [2] + [0] , C = 0, 2 + 0 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 2 1 4.
985+17 =
< scratch > [9, 8, 5] has 3 digits. [1, 7] has 2 digits. [5] + [7] , C = 1, 5 + 7 + 1 = 12, A ->2, C -> 1 [8] + [1] , C = 1, 8 + 1 + 1 = 10, A ->0, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 0 2.
7395+6 =
< scratch > [7, 3, 9, 5] has 4 digits. [6] has 1 digits. [5] + [6] , C = 1, 5 + 6 + 1 = 11, A ->1, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 [7] + [0] , C = 0, 7 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 4 0 1.
659+637 =
< scratch > [6, 5, 9] has 3 digits. [6, 3, 7] has 3 digits. [9] + [7] , C = 1, 9 + 7 + 1 = 16, A ->6, C -> 1 [5] + [3] , C = 0, 5 + 3 + 0 = 9, A ->9, C -> 0 [6] + [6] , C = 1, 6 + 6 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 9 6.
6992+15 =
< scratch > [6, 9, 9, 2] has 4 digits. [1, 5] has 2 digits. [2] + [5] , C = 0, 2 + 5 + 0 = 7, A ->7, C -> 0 [9] + [1] , C = 1, 9 + 1 + 1 = 10, A ->0, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 0 0 7.
157+54 =
< scratch > [1, 5, 7] has 3 digits. [5, 4] has 2 digits. [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [5] + [5] , C = 1, 5 + 5 + 1 = 11, A ->1, C -> 1 [1] + [0] , C = 0, 1 + 0 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 1 1.
8098+5 =
< scratch > [8, 0, 9, 8] has 4 digits. [5] has 1 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [0] + [0] , C = 0, 0 + 0 + 0 = 1, A ->1, C -> 0 [8] + [0] , C = 0, 8 + 0 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 1 0 3.
99+124 =
< scratch > [9, 9] has 2 digits. [1, 2, 4] has 3 digits. [9] + [4] , C = 1, 9 + 4 + 1 = 13, A ->3, C -> 1 [9] + [2] , C = 1, 9 + 2 + 1 = 12, A ->2, C -> 1 [0] + [1] , C = 0, 0 + 1 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 2 3.
4+2598 =
< scratch > [4] has 1 digits. [2, 5, 9, 8] has 4 digits. [4] + [8] , C = 1, 4 + 8 + 1 = 12, A ->2, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 [0] + [2] , C = 0, 0 + 2 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 6 0 2.
481+658 =
< scratch > [4, 8, 1] has 3 digits. [6, 5, 8] has 3 digits. [1] + [8] , C = 0, 1 + 8 + 0 = 9, A ->9, C -> 0 [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [4] + [6] , C = 1, 4 + 6 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 3 9.
592+3329 =
< scratch > [5, 9, 2] has 3 digits. [3, 3, 2, 9] has 4 digits. [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [9] + [2] , C = 1, 9 + 2 + 1 = 12, A ->2, C -> 1 [5] + [3] , C = 0, 5 + 3 + 0 = 9, A ->9, C -> 0 [0] + [3] , C = 0, 0 + 3 + 0 = 3, A ->3, C -> 0 </ scratch > sum:3 9 2 1.
197+5881 =
< scratch > [1, 9, 7] has 3 digits. [5, 8, 8, 1] has 4 digits. [7] + [1] , C = 0, 7 + 1 + 0 = 8, A ->8, C -> 0 [9] + [8] , C = 1, 9 + 8 + 1 = 17, A ->7, C -> 1 [1] + [8] , C = 1, 1 + 8 + 1 = 10, A ->0, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 0 7 8.
666+47 =
< scratch > [6, 6, 6] has 3 digits. [4, 7] has 2 digits. [6] + [7] , C = 1, 6 + 7 + 1 = 13, A ->3, C -> 1 [6] + [4] , C = 1, 6 + 4 + 1 = 11, A ->1, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 1 3.
2181+9698 =
< scratch > [2, 1, 8, 1] has 4 digits. [9, 6, 9, 8] has 4 digits. [1] + [8] , C = 0, 1 + 8 + 0 = 9, A ->9, C -> 0 [8] + [9] , C = 1, 8 + 9 + 1 = 17, A ->7, C -> 1 [1] + [6] , C = 0, 1 + 6 + 0 = 8, A ->8, C -> 0 [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 8 7 9.
3724+380 =
< scratch > [3, 7, 2, 4] has 4 digits. [3, 8, 0] has 3 digits. [4] + [0] , C = 0, 4 + 0 + 0 = 4, A ->4, C -> 0 [2] + [8] , C = 1, 2 + 8 + 1 = 10, A ->0, C -> 1 [7] + [3] , C = 1, 7 + 3 + 1 = 11, A ->1, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 </ scratch > sum:4 1 0 4.
725+75 =
< scratch > [7, 2, 5] has 3 digits. [7, 5] has 2 digits. [5] + [5] , C = 1, 5 + 5 + 1 = 10, A ->0, C -> 1 [2] + [7] , C = 1, 2 + 7 + 1 = 10, A ->0, C -> 1 [7] + [0] , C = 0, 7 + 0 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 0 0.
9+1395 =
< scratch > [9] has 1 digits. [1, 3, 9, 5] has 4 digits. [9] + [5] , C = 1, 9 + 5 + 1 = 14, A ->4, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [0] + [3] , C = 0, 0 + 3 + 0 = 4, A ->4, C -> 0 [0] + [1] , C = 0, 0 + 1 + 0 = 1, A ->1, C -> 0 </ scratch > sum:1 4 0 4.
9698+9 =
< scratch > [9, 6, 9, 8] has 4 digits. [9] has 1 digits. [8] + [9] , C = 1, 8 + 9 + 1 = 17, A ->7, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 [9] + [0] , C = 0, 9 + 0 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 7 0 7.
482+9924 =
< scratch > [4, 8, 2] has 3 digits. [9, 9, 2, 4] has 4 digits. [2] + [4] , C = 0, 2 + 4 + 0 = 6, A ->6, C -> 0 [8] + [2] , C = 1, 8 + 2 + 1 = 10, A ->0, C -> 1 [4] + [9] , C = 1, 4 + 9 + 1 = 14, A ->4, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 4 0 6.
6830+4673 =
< scratch > [6, 8, 3, 0] has 4 digits. [4, 6, 7, 3] has 4 digits. [0] + [3] , C = 0, 0 + 3 + 0 = 3, A ->3, C -> 0 [3] + [7] , C = 1, 3 + 7 + 1 = 10, A ->0, C -> 1 [8] + [6] , C = 1, 8 + 6 + 1 = 15, A ->5, C -> 1 [6] + [4] , C = 1, 6 + 4 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 5 0 3.
50+7976 =
< scratch > [5, 0] has 2 digits. [7, 9, 7, 6] has 4 digits. [0] + [6] , C = 0, 0 + 6 + 0 = 6, A ->6, C -> 0 [5] + [7] , C = 1, 5 + 7 + 1 = 12, A ->2, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [0] + [7] , C = 0, 0 + 7 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 0 2 6.
479+3385 =
< scratch > [4, 7, 9] has 3 digits. [3, 3, 8, 5] has 4 digits. [9] + [5] , C = 1, 9 + 5 + 1 = 14, A ->4, C -> 1 [7] + [8] , C = 1, 7 + 8 + 1 = 16, A ->6, C -> 1 [4] + [3] , C = 0, 4 + 3 + 0 = 8, A ->8, C -> 0 [0] + [3] , C = 0, 0 + 3 + 0 = 3, A ->3, C -> 0 </ scratch > sum:3 8 6 4.
4090+957 =
< scratch > [4, 0, 9, 0] has 4 digits. [9, 5, 7] has 3 digits. [0] + [7] , C = 0, 0 + 7 + 0 = 7, A ->7, C -> 0 [9] + [5] , C = 1, 9 + 5 + 1 = 14, A ->4, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [4] + [0] , C = 0, 4 + 0 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 0 4 7.
652+891 =
< scratch > [6, 5, 2] has 3 digits. [8, 9, 1] has 3 digits. [2] + [1] , C = 0, 2 + 1 + 0 = 3, A ->3, C -> 0 [5] + [9] , C = 1, 5 + 9 + 1 = 14, A ->4, C -> 1 [6] + [8] , C = 1, 6 + 8 + 1 = 15, A ->5, C -> 1 </ scratch > sum:1 5 4 3.
7388+467 =
< scratch > [7, 3, 8, 8] has 4 digits. [4, 6, 7] has 3 digits. [8] + [7] , C = 1, 8 + 7 + 1 = 15, A ->5, C -> 1 [8] + [6] , C = 1, 8 + 6 + 1 = 15, A ->5, C -> 1 [3] + [4] , C = 0, 3 + 4 + 0 = 8, A ->8, C -> 0 [7] + [0] , C = 0, 7 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 8 5 5.
28+5395 =
< scratch > [2, 8] has 2 digits. [5, 3, 9, 5] has 4 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [2] + [9] , C = 1, 2 + 9 + 1 = 12, A ->2, C -> 1 [0] + [3] , C = 0, 0 + 3 + 0 = 4, A ->4, C -> 0 [0] + [5] , C = 0, 0 + 5 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 4 2 3.
7271+8457 =
< scratch > [7, 2, 7, 1] has 4 digits. [8, 4, 5, 7] has 4 digits. [1] + [7] , C = 0, 1 + 7 + 0 = 8, A ->8, C -> 0 [7] + [5] , C = 1, 7 + 5 + 1 = 12, A ->2, C -> 1 [2] + [4] , C = 0, 2 + 4 + 0 = 7, A ->7, C -> 0 [7] + [8] , C = 1, 7 + 8 + 1 = 15, A ->5, C -> 1 </ scratch > sum:1 5 7 2 8.
525+6375 =
< scratch > [5, 2, 5] has 3 digits. [6, 3, 7, 5] has 4 digits. [5] + [5] , C = 1, 5 + 5 + 1 = 10, A ->0, C -> 1 [2] + [7] , C = 1, 2 + 7 + 1 = 10, A ->0, C -> 1 [5] + [3] , C = 0, 5 + 3 + 0 = 9, A ->9, C -> 0 [0] + [6] , C = 0, 0 + 6 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 9 0 0.
796+955 =
< scratch > [7, 9, 6] has 3 digits. [9, 5, 5] has 3 digits. [6] + [5] , C = 1, 6 + 5 + 1 = 11, A ->1, C -> 1 [9] + [5] , C = 1, 9 + 5 + 1 = 15, A ->5, C -> 1 [7] + [9] , C = 1, 7 + 9 + 1 = 17, A ->7, C -> 1 </ scratch > sum:1 7 5 1.
77+84 =
< scratch > [7, 7] has 2 digits. [8, 4] has 2 digits. [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [7] + [8] , C = 1, 7 + 8 + 1 = 16, A ->6, C -> 1 </ scratch > sum:1 6 1.
6724+495 =
< scratch > [6, 7, 2, 4] has 4 digits. [4, 9, 5] has 3 digits. [4] + [5] , C = 0, 4 + 5 + 0 = 9, A ->9, C -> 0 [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [7] + [4] , C = 1, 7 + 4 + 1 = 12, A ->2, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 2 1 9.
7354+97 =
< scratch > [7, 3, 5, 4] has 4 digits. [9, 7] has 2 digits. [4] + [7] , C = 1, 4 + 7 + 1 = 11, A ->1, C -> 1 [5] + [9] , C = 1, 5 + 9 + 1 = 15, A ->5, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 [7] + [0] , C = 0, 7 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 4 5 1.
6758+691 =
< scratch > [6, 7, 5, 8] has 4 digits. [6, 9, 1] has 3 digits. [8] + [1] , C = 0, 8 + 1 + 0 = 9, A ->9, C -> 0 [5] + [9] , C = 1, 5 + 9 + 1 = 14, A ->4, C -> 1 [7] + [6] , C = 1, 7 + 6 + 1 = 14, A ->4, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 4 4 9.
9887+440 =
< scratch > [9, 8, 8, 7] has 4 digits. [4, 4, 0] has 3 digits. [7] + [0] , C = 0, 7 + 0 + 0 = 7, A ->7, C -> 0 [8] + [4] , C = 1, 8 + 4 + 1 = 12, A ->2, C -> 1 [8] + [4] , C = 1, 8 + 4 + 1 = 13, A ->3, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 3 2 7.
398+861 =
< scratch > [3, 9, 8] has 3 digits. [8, 6, 1] has 3 digits. [8] + [1] , C = 0, 8 + 1 + 0 = 9, A ->9, C -> 0 [9] + [6] , C = 1, 9 + 6 + 1 = 15, A ->5, C -> 1 [3] + [8] , C = 1, 3 + 8 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 5 9.
230+9961 =
< scratch > [2, 3, 0] has 3 digits. [9, 9, 6, 1] has 4 digits. [0] + [1] , C = 0, 0 + 1 + 0 = 1, A ->1, C -> 0 [3] + [6] , C = 0, 3 + 6 + 0 = 9, A ->9, C -> 0 [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 1 9 1.
128+73 =
< scratch > [1, 2, 8] has 3 digits. [7, 3] has 2 digits. [8] + [3] , C = 1, 8 + 3 + 1 = 11, A ->1, C -> 1 [2] + [7] , C = 1, 2 + 7 + 1 = 10, A ->0, C -> 1 [1] + [0] , C = 0, 1 + 0 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 0 1.
763+98 =
< scratch > [7, 6, 3] has 3 digits. [9, 8] has 2 digits. [3] + [8] , C = 1, 3 + 8 + 1 = 11, A ->1, C -> 1 [6] + [9] , C = 1, 6 + 9 + 1 = 16, A ->6, C -> 1 [7] + [0] , C = 0, 7 + 0 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 6 1.
4939+456 =
< scratch > [4, 9, 3, 9] has 4 digits. [4, 5, 6] has 3 digits. [9] + [6] , C = 1, 9 + 6 + 1 = 15, A ->5, C -> 1 [3] + [5] , C = 0, 3 + 5 + 0 = 9, A ->9, C -> 0 [9] + [4] , C = 1, 9 + 4 + 1 = 13, A ->3, C -> 1 [4] + [0] , C = 0, 4 + 0 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 3 9 5.
671+868 =
< scratch > [6, 7, 1] has 3 digits. [8, 6, 8] has 3 digits. [1] + [8] , C = 0, 1 + 8 + 0 = 9, A ->9, C -> 0 [7] + [6] , C = 1, 7 + 6 + 1 = 13, A ->3, C -> 1 [6] + [8] , C = 1, 6 + 8 + 1 = 15, A ->5, C -> 1 </ scratch > sum:1 5 3 9.
46+155 =
< scratch > [4, 6] has 2 digits. [1, 5, 5] has 3 digits. [6] + [5] , C = 1, 6 + 5 + 1 = 11, A ->1, C -> 1 [4] + [5] , C = 1, 4 + 5 + 1 = 10, A ->0, C -> 1 [0] + [1] , C = 0, 0 + 1 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 0 1.
768+8485 =
< scratch > [7, 6, 8] has 3 digits. [8, 4, 8, 5] has 4 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [6] + [8] , C = 1, 6 + 8 + 1 = 15, A ->5, C -> 1 [7] + [4] , C = 1, 7 + 4 + 1 = 12, A ->2, C -> 1 [0] + [8] , C = 0, 0 + 8 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 2 5 3.
811+9353 =
< scratch > [8, 1, 1] has 3 digits. [9, 3, 5, 3] has 4 digits. [1] + [3] , C = 0, 1 + 3 + 0 = 4, A ->4, C -> 0 [1] + [5] , C = 0, 1 + 5 + 0 = 6, A ->6, C -> 0 [8] + [3] , C = 1, 8 + 3 + 1 = 11, A ->1, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 1 6 4.
675+5342 =
< scratch > [6, 7, 5] has 3 digits. [5, 3, 4, 2] has 4 digits. [5] + [2] , C = 0, 5 + 2 + 0 = 7, A ->7, C -> 0 [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [6] + [3] , C = 1, 6 + 3 + 1 = 10, A ->0, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 0 1 7.
1328+96 =
< scratch > [1, 3, 2, 8] has 4 digits. [9, 6] has 2 digits. [8] + [6] , C = 1, 8 + 6 + 1 = 14, A ->4, C -> 1 [2] + [9] , C = 1, 2 + 9 + 1 = 12, A ->2, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 [1] + [0] , C = 0, 1 + 0 + 0 = 1, A ->1, C -> 0 </ scratch > sum:1 4 2 4.
4498+39 =
< scratch > [4, 4, 9, 8] has 4 digits. [3, 9] has 2 digits. [8] + [9] , C = 1, 8 + 9 + 1 = 17, A ->7, C -> 1 [9] + [3] , C = 1, 9 + 3 + 1 = 13, A ->3, C -> 1 [4] + [0] , C = 0, 4 + 0 + 0 = 5, A ->5, C -> 0 [4] + [0] , C = 0, 4 + 0 + 0 = 4, A ->4, C -> 0 </ scratch > sum:4 5 3 7.
6089+5546 =
< scratch > [6, 0, 8, 9] has 4 digits. [5, 5, 4, 6] has 4 digits. [9] + [6] , C = 1, 9 + 6 + 1 = 15, A ->5, C -> 1 [8] + [4] , C = 1, 8 + 4 + 1 = 13, A ->3, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 [6] + [5] , C = 1, 6 + 5 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 6 3 5.
828+6208 =
< scratch > [8, 2, 8] has 3 digits. [6, 2, 0, 8] has 4 digits. [8] + [8] , C = 1, 8 + 8 + 1 = 16, A ->6, C -> 1 [2] + [0] , C = 0, 2 + 0 + 0 = 3, A ->3, C -> 0 [8] + [2] , C = 1, 8 + 2 + 1 = 10, A ->0, C -> 1 [0] + [6] , C = 0, 0 + 6 + 0 = 7, A ->7, C -> 0 </ scratch > sum:7 0 3 6.
1328+5374 =
< scratch > [1, 3, 2, 8] has 4 digits. [5, 3, 7, 4] has 4 digits. [8] + [4] , C = 1, 8 + 4 + 1 = 12, A ->2, C -> 1 [2] + [7] , C = 1, 2 + 7 + 1 = 10, A ->0, C -> 1 [3] + [3] , C = 0, 3 + 3 + 0 = 7, A ->7, C -> 0 [1] + [5] , C = 0, 1 + 5 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 7 0 2.
5796+8 =
< scratch > [5, 7, 9, 6] has 4 digits. [8] has 1 digits. [6] + [8] , C = 1, 6 + 8 + 1 = 14, A ->4, C -> 1 [9] + [0] , C = 1, 9 + 0 + 1 = 10, A ->0, C -> 1 [7] + [0] , C = 0, 7 + 0 + 0 = 8, A ->8, C -> 0 [5] + [0] , C = 0, 5 + 0 + 0 = 5, A ->5, C -> 0 </ scratch > sum:5 8 0 4.
578+775 =
< scratch > [5, 7, 8] has 3 digits. [7, 7, 5] has 3 digits. [8] + [5] , C = 1, 8 + 5 + 1 = 13, A ->3, C -> 1 [7] + [7] , C = 1, 7 + 7 + 1 = 15, A ->5, C -> 1 [5] + [7] , C = 1, 5 + 7 + 1 = 13, A ->3, C -> 1 </ scratch > sum:1 3 5 3.
3557+83 =
< scratch > [3, 5, 5, 7] has 4 digits. [8, 3] has 2 digits. [7] + [3] , C = 1, 7 + 3 + 1 = 10, A ->0, C -> 1 [5] + [8] , C = 1, 5 + 8 + 1 = 14, A ->4, C -> 1 [5] + [0] , C = 0, 5 + 0 + 0 = 6, A ->6, C -> 0 [3] + [0] , C = 0, 3 + 0 + 0 = 3, A ->3, C -> 0 </ scratch > sum:3 6 4 0.
77+44 =
< scratch > [7, 7] has 2 digits. [4, 4] has 2 digits. [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [7] + [4] , C = 1, 7 + 4 + 1 = 12, A ->2, C -> 1 </ scratch > sum:1 2 1.
7956+316 =
< scratch > [7, 9, 5, 6] has 4 digits. [3, 1, 6] has 3 digits. [6] + [6] , C = 1, 6 + 6 + 1 = 12, A ->2, C -> 1 [5] + [1] , C = 0, 5 + 1 + 0 = 7, A ->7, C -> 0 [9] + [3] , C = 1, 9 + 3 + 1 = 12, A ->2, C -> 1 [7] + [0] , C = 0, 7 + 0 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 2 7 2.
7513+4047 =
< scratch > [7, 5, 1, 3] has 4 digits. [4, 0, 4, 7] has 4 digits. [3] + [7] , C = 1, 3 + 7 + 1 = 10, A ->0, C -> 1 [1] + [4] , C = 0, 1 + 4 + 0 = 6, A ->6, C -> 0 [5] + [0] , C = 0, 5 + 0 + 0 = 5, A ->5, C -> 0 [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 5 6 0.
2377+75 =
< scratch > [2, 3, 7, 7] has 4 digits. [7, 5] has 2 digits. [7] + [5] , C = 1, 7 + 5 + 1 = 12, A ->2, C -> 1 [7] + [7] , C = 1, 7 + 7 + 1 = 15, A ->5, C -> 1 [3] + [0] , C = 0, 3 + 0 + 0 = 4, A ->4, C -> 0 [2] + [0] , C = 0, 2 + 0 + 0 = 2, A ->2, C -> 0 </ scratch > sum:2 4 5 2.
6756+8708 =
< scratch > [6, 7, 5, 6] has 4 digits. [8, 7, 0, 8] has 4 digits. [6] + [8] , C = 1, 6 + 8 + 1 = 14, A ->4, C -> 1 [5] + [0] , C = 0, 5 + 0 + 0 = 6, A ->6, C -> 0 [7] + [7] , C = 1, 7 + 7 + 1 = 14, A ->4, C -> 1 [6] + [8] , C = 1, 6 + 8 + 1 = 15, A ->5, C -> 1 </ scratch > sum:1 5 4 6 4.
7206+3006 =
< scratch > [7, 2, 0, 6] has 4 digits. [3, 0, 0, 6] has 4 digits. [6] + [6] , C = 1, 6 + 6 + 1 = 12, A ->2, C -> 1 [0] + [0] , C = 0, 0 + 0 + 0 = 1, A ->1, C -> 0 [2] + [0] , C = 0, 2 + 0 + 0 = 2, A ->2, C -> 0 [7] + [3] , C = 1, 7 + 3 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 2 1 2.
94+8946 =
< scratch > [9, 4] has 2 digits. [8, 9, 4, 6] has 4 digits. [4] + [6] , C = 1, 4 + 6 + 1 = 10, A ->0, C -> 1 [9] + [4] , C = 1, 9 + 4 + 1 = 14, A ->4, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 [0] + [8] , C = 0, 0 + 8 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 0 4 0.
76+869 =
< scratch > [7, 6] has 2 digits. [8, 6, 9] has 3 digits. [6] + [9] , C = 1, 6 + 9 + 1 = 15, A ->5, C -> 1 [7] + [6] , C = 1, 7 + 6 + 1 = 14, A ->4, C -> 1 [0] + [8] , C = 0, 0 + 8 + 0 = 9, A ->9, C -> 0 </ scratch > sum:9 4 5.
4687+7084 =
< scratch > [4, 6, 8, 7] has 4 digits. [7, 0, 8, 4] has 4 digits. [7] + [4] , C = 1, 7 + 4 + 1 = 11, A ->1, C -> 1 [8] + [8] , C = 1, 8 + 8 + 1 = 17, A ->7, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 [4] + [7] , C = 1, 4 + 7 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 7 7 1.
284+891 =
< scratch > [2, 8, 4] has 3 digits. [8, 9, 1] has 3 digits. [4] + [1] , C = 0, 4 + 1 + 0 = 5, A ->5, C -> 0 [8] + [9] , C = 1, 8 + 9 + 1 = 17, A ->7, C -> 1 [2] + [8] , C = 1, 2 + 8 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 7 5.
518+5707 =
< scratch > [5, 1, 8] has 3 digits. [5, 7, 0, 7] has 4 digits. [8] + [7] , C = 1, 8 + 7 + 1 = 15, A ->5, C -> 1 [1] + [0] , C = 0, 1 + 0 + 0 = 2, A ->2, C -> 0 [5] + [7] , C = 1, 5 + 7 + 1 = 12, A ->2, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 </ scratch > sum:6 2 2 5.
689+333 =
< scratch > [6, 8, 9] has 3 digits. [3, 3, 3] has 3 digits. [9] + [3] , C = 1, 9 + 3 + 1 = 12, A ->2, C -> 1 [8] + [3] , C = 1, 8 + 3 + 1 = 12, A ->2, C -> 1 [6] + [3] , C = 1, 6 + 3 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 2 2.
79+8653 =
< scratch > [7, 9] has 2 digits. [8, 6, 5, 3] has 4 digits. [9] + [3] , C = 1, 9 + 3 + 1 = 12, A ->2, C -> 1 [7] + [5] , C = 1, 7 + 5 + 1 = 13, A ->3, C -> 1 [0] + [6] , C = 0, 0 + 6 + 0 = 7, A ->7, C -> 0 [0] + [8] , C = 0, 0 + 8 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 7 3 2.
5602+4469 =
< scratch > [5, 6, 0, 2] has 4 digits. [4, 4, 6, 9] has 4 digits. [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [0] + [6] , C = 0, 0 + 6 + 0 = 7, A ->7, C -> 0 [6] + [4] , C = 1, 6 + 4 + 1 = 10, A ->0, C -> 1 [5] + [4] , C = 1, 5 + 4 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 0 7 1.
5963+5308 =
< scratch > [5, 9, 6, 3] has 4 digits. [5, 3, 0, 8] has 4 digits. [3] + [8] , C = 1, 3 + 8 + 1 = 11, A ->1, C -> 1 [6] + [0] , C = 0, 6 + 0 + 0 = 7, A ->7, C -> 0 [9] + [3] , C = 1, 9 + 3 + 1 = 12, A ->2, C -> 1 [5] + [5] , C = 1, 5 + 5 + 1 = 11, A ->1, C -> 1 </ scratch > sum:1 1 2 7 1.
7489+9222 =
< scratch > [7, 4, 8, 9] has 4 digits. [9, 2, 2, 2] has 4 digits. [9] + [2] , C = 1, 9 + 2 + 1 = 11, A ->1, C -> 1 [8] + [2] , C = 1, 8 + 2 + 1 = 11, A ->1, C -> 1 [4] + [2] , C = 0, 4 + 2 + 0 = 7, A ->7, C -> 0 [7] + [9] , C = 1, 7 + 9 + 1 = 16, A ->6, C -> 1 </ scratch > sum:1 6 7 1 1.
63+8589 =
< scratch > [6, 3] has 2 digits. [8, 5, 8, 9] has 4 digits. [3] + [9] , C = 1, 3 + 9 + 1 = 12, A ->2, C -> 1 [6] + [8] , C = 1, 6 + 8 + 1 = 15, A ->5, C -> 1 [0] + [5] , C = 0, 0 + 5 + 0 = 6, A ->6, C -> 0 [0] + [8] , C = 0, 0 + 8 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 6 5 2.
4759+147 =
< scratch > [4, 7, 5, 9] has 4 digits. [1, 4, 7] has 3 digits. [9] + [7] , C = 1, 9 + 7 + 1 = 16, A ->6, C -> 1 [5] + [4] , C = 1, 5 + 4 + 1 = 10, A ->0, C -> 1 [7] + [1] , C = 0, 7 + 1 + 0 = 9, A ->9, C -> 0 [4] + [0] , C = 0, 4 + 0 + 0 = 4, A ->4, C -> 0 </ scratch > sum:4 9 0 6.
294+1576 =
< scratch > [2, 9, 4] has 3 digits. [1, 5, 7, 6] has 4 digits. [4] + [6] , C = 1, 4 + 6 + 1 = 10, A ->0, C -> 1 [9] + [7] , C = 1, 9 + 7 + 1 = 17, A ->7, C -> 1 [2] + [5] , C = 0, 2 + 5 + 0 = 8, A ->8, C -> 0 [0] + [1] , C = 0, 0 + 1 + 0 = 1, A ->1, C -> 0 </ scratch > sum:1 8 7 0.
543+7759 =
< scratch > [5, 4, 3] has 3 digits. [7, 7, 5, 9] has 4 digits. [3] + [9] , C = 1, 3 + 9 + 1 = 12, A ->2, C -> 1 [4] + [5] , C = 1, 4 + 5 + 1 = 10, A ->0, C -> 1 [5] + [7] , C = 1, 5 + 7 + 1 = 13, A ->3, C -> 1 [0] + [7] , C = 0, 0 + 7 + 0 = 8, A ->8, C -> 0 </ scratch > sum:8 3 0 2.
7012+3938 =
< scratch > [7, 0, 1, 2] has 4 digits. [3, 9, 3, 8] has 4 digits. [2] + [8] , C = 1, 2 + 8 + 1 = 10, A ->0, C -> 1 [1] + [3] , C = 0, 1 + 3 + 0 = 5, A ->5, C -> 0 [0] + [9] , C = 0, 0 + 9 + 0 = 9, A ->9, C -> 0 [7] + [3] , C = 1, 7 + 3 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 9 5 0.
102+9969 =
< scratch > [1, 0, 2] has 3 digits. [9, 9, 6, 9] has 4 digits. [2] + [9] , C = 1, 2 + 9 + 1 = 11, A ->1, C -> 1 [0] + [6] , C = 0, 0 + 6 + 0 = 7, A ->7, C -> 0 [1] + [9] , C = 1, 1 + 9 + 1 = 10, A ->0, C -> 1 [0] + [9] , C = 1, 0 + 9 + 1 = 10, A ->0, C -> 1 </ scratch > sum:1 0 0 7 1.
880+694 =
< scratch > [8, 8, 0] has 3 digits. [6, 9, 4] has 3 digits. [0] + [4] , C = 0, 0 + 4 + 0 = 4, A ->4, C -> 0 [8] + [9] , C = 1, 8 + 9 + 1 = 17, A ->7, C -> 1 [8] + [6] , C = 1, 8 + 6 + 1 = 15, A ->5, C -> 1 </ scratch > sum:1 5 7 4.