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, 17, ['4061', '8041', 'V', '5461', '8247', '3119', 'p', '5313', 'T', 'Z', 'D', '8837', 'B', 'a', '6441', 'O', '8311', 'Z', '473', '9', 'Q', 'E', '2957', 'W', '6263', '3917', '9775', 't']

SOLUTION: 57831

PROBLEM: 1, 7, ['u', 'Z', 'j', 'A', 'N', 's', 'h', '7331', '8259']

SOLUTION: 0

PROBLEM: 17, 20, ['p', 'c', '8673', 'w', 'm', 'A', 'q', 'a', 'D', '1895', 'c', '8027', 't', 'a', 'Q', 'i', 'p', '8179', 'Q', 'a', 'e', '1249', 'U', 'r', 'A', '985', '6843', 'o']

SOLUTION:
8179