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, 9, ['6607', '6185', 'X', 'd', 'T', 't', 'Y', 'p', '2789', 'a', '7365', 'k', 'n', '1853', 'x', 'F', '5523', '2827', '1441', 'F', 'c', 'i', 'n', 'h', '3633']

SOLUTION: 15581

PROBLEM: 9, 21, ['h', 'C', '8411', 'j', '5693', 'L', 'D', 'V', 't', 't', 'E', '3101', '5045', '9945', 'P', 'q', 'e', 'k', 'T', 'b', 'A', '7015', '6635', '3769', 'j', 'X', '6469']

SOLUTION: 18091

PROBLEM: 3, 11, ['3619', 'K', '7879', 'z', '9081', '2025', '3435', 'y', 'a', 'Z', 'Z', 'N', 'L', 'P', 'i', 'F', 'N', '9709', 'O']

SOLUTION:
22420