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: 18, 24, ['3493', 'T', '2499', 'l', '543', 'Y', '2247', '2665', 'y', 'z', 'a', 'H', '1057', '2401', '5587', 'w', 'N', 'n', 's', 'H', 'u', 'N', '757', 'u', 'R']

SOLUTION: 757

PROBLEM: 4, 5, ['1427', '7597', '765', 't', '7057', 'f', 'B', 'k']

SOLUTION: 7057

PROBLEM: 9, 10, ['3433', 'Z', '8101', 'B', '653', '4829', '3339', 'w', 'Q', 'L', 'K', 'j']

SOLUTION:
0