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: 2, 5, ['9615', '7859', 'D', 'J', '1471']

SOLUTION: 9330

PROBLEM: 5, 8, ['3017', '2471', 'r', 'M', '8213', '4259', '8397', 'A', '9809', '5827', '4079', 'v', '6735', 'T', 'n', '3877', '9777', '1395', '9631']

SOLUTION: 20869

PROBLEM: 12, 14, ['9645', '6833', 'D', '1037', '2229', '8415', '7739', '4933', '239', '4925', 'v', 'Q', '6519', 'S', '7373']

SOLUTION:
6519