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: 2, 7, ['3295', '2909', '8081', '8299', '8979', 'J', 'V', 'r', '2403', '5589', '6875', '9181', '6547', 'k', 'n']

SOLUTION: 28268

PROBLEM: 1, 1, ['D', 'W', '5783']

SOLUTION: 0

PROBLEM: 5, 14, ['8581', 'z', '9383', '4857', 'o', 'r', 'P', '1187', 'O', 'S', 'F', 'x', 'g', '4933', '6045', 'z', '449', '4105', 'R', 'q', 'f', '6613', '7581', 'J', 'M', 't', '6615', 'O']

SOLUTION:
6120