Update app.py

app.py

@@ -17,8 +17,8 @@ def magic_tool(arg1:float, arg2:float)-> str: #it's import to specify the return
         arg2: the second argument
     """
     try:
-        aa = arg1 * arg2 + arg1
-        return aa
+        result = arg1 * arg2 + arg1
+        return result
     except Exception as e:
             return f"Error get magic result for {arg1} + {arg2}"