TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to return the sum of all the numerical elements in the list A between the positions i and j (including positions i and j). Return 0 if no numerical element is present in the list between the given ranges. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
PROBLEM: 4, 6, ['c', 'I', 'O', 'q', 'W', 'w', '7245', '4329', '3833', 'v', 'p', 'V', '5311', 'x', '3971', 't', '8157', '1803']

SOLUTION: 0

PROBLEM: 4, 18, ['b', 'K', 'Z', '8757', '691', '8915', 'l', '2819', '9599', '4149', '8791', '7815', '7211', '1973', 'w', '5557', '1071', '2483', '9851', 'x', '5441', '2787', '3723', '5981', 'o', '1045', 'z']

SOLUTION: 69831

PROBLEM: 3, 7, ['c', '7447', 'E', 'w', 'l', 'j', 's', 'N']

SOLUTION:
0