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: 1, 7, ['7999', '9549', '8299', 't', '9311', '2385', 'B', 'x', '565', 'C', '6531', 'A', '5949', 'H']

SOLUTION: 37543

PROBLEM: 2, 2, ['8023', '9385', '7533', 'd', 'H', '3751', 'A', '1399']

SOLUTION: 9385

PROBLEM: 11, 15, ['A', '1085', '5937', '7867', '6629', 'r', '3027', 'y', '3781', '1143', '6979', 'g', '2531', 'X', '7275', '1487', '8253', 'T']

SOLUTION:
16785