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: 5, 12, ['4439', 'P', 'e', '4929', '2085', 'w', 'C', '5385', '6517', 'w', '6257', '9721']

SOLUTION: 29965

PROBLEM: 1, 3, ['m', '6287', '41', 'W', '9113', 'P', 'w', 'H', '1651', '8837', '1907', 'e', 'N', 'q', 'j', 'd', 'c', '2459', '6635']

SOLUTION: 6328

PROBLEM: 6, 7, ['8533', '9225', 'Y', '3399', '2799', 'M', 'g', '3919']

SOLUTION:
0