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, 24, ['3749', 'r', '9823', 'Y', 'K', 'V', 'q', 'H', '3273', '3091', '9531', 'E', '2219', '3101', 'P', 'k', 'r', 'a', 'T', 'I', 'j', 'i', '4045', 'K', 'r']

SOLUTION: 9365

PROBLEM: 12, 20, ['V', 'H', '5509', 'J', '887', '6361', '4273', '1017', '5167', 'G', 'g', '5185', '2617', 'h', 'Y', '7697', '5075', 'F', '2675', '29', 'K', '2081', 'R', '7011']

SOLUTION: 23278

PROBLEM: 2, 3, ['S', 't', '8843', '3391', '7725']

SOLUTION:
8843

