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: 12, 16, ['J', 'B', '4463', 'b', 'o', '5495', 'S', '7657', 'Y', '4805', 'h', 'f', '9743', 'A', '1167', 'W', 'y', 's', '529', '2899', 't', '5111', '3615', '217', '799', '2761', 'V', '3491', '7621', 'R']

SOLUTION: 10910

PROBLEM: 2, 9, ['3707', 'J', 'H', '8907', '597', 'Z', '9725', 'g', 'R']

SOLUTION: 19229

PROBLEM: 2, 17, ['6951', '5333', '1841', '9255', '2685', 'm', 'A', 'F', '1147', 'Q', '477', '4351', 'M', '1557', '6903', 'U', 'a', 'L', 'D', 'z']

SOLUTION:
33549