Update app.py

app.py

@@ -216,7 +216,7 @@ def calculate_score_and_grades():
 
     # Calculate total score and maximum possible score
     total_score = sum(int(mark[0]) for mark in marks)
-    max_possible_score = int(max_marks)
+    max_possible_score = int(max_marks)*len(marks)
 
     # Prevent division by zero
     if max_possible_score == 0: