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: 4, 9, ['k', 'N', 'd', '9345', '2971', 'Q', '917', 'X', '417', 'y', 'B', '6149', '9769', '9949', '2339', 'Q', 'A', 'r', '1059', 'c', 'U', 'p', '6951', 'Z', 'F', '7753', 'g']

SOLUTION: 13650

PROBLEM: 8, 12, ['1875', '5859', 'n', '8223', '9611', '6415', 'A', '7433', 'y', 'J', 'y', '7221', 'E', '5395', '587']

SOLUTION:
14654