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, 16, ['e', 'Q', '4017', '1999', '2413', 'v', '4911', 'N', 'x', '3475', '2179', 'o', 'a', '6361', '1723', '6273']

SOLUTION: 33351

PROBLEM: 13, 14, ['6693', 'J', '2765', 'P', 'h', '755', 'z', '7483', 'W', '6895', '1293', '3479', 'Y', '1667', '9635']

SOLUTION: 1667

PROBLEM: 1, 2, ['1907', '1489', 'm', '4571', 'a']

SOLUTION:
3396