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: 6, 7, ['6635', '1537', 'F', 'h', '7965', 'K', '5231', 'K', '3089']

SOLUTION: 5231

PROBLEM: 2, 2, ['4965', '6219']

SOLUTION: 6219

PROBLEM: 1, 30, ['8909', '8281', '8815', '4783', 'Q', '2849', 'p', 's', 'v', '7513', 'C', 'i', 'T', 'Y', '1735', '7955', '4243', 'j', 'C', 'y', 'G', 'P', '7393', 'Z', '4187', 'o', '3977', 'Z', 'Y', 'C']

SOLUTION:
70640