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: 9, 13, ['x', '4589', 'q', 'X', 'Q', 'e', '8007', '5779', 'Z', '8503', 's', '6425', '133', '5389', 'e', '9477', '3763', 'Q', 'B', 'r', 'P']

SOLUTION: 15061

PROBLEM: 16, 29, ['235', 'N', 'h', 'E', '9109', '7383', '1547', '5155', 'q', 't', '1835', '1491', 's', 'p', '1129', '4173', '6505', 'F', 'L', '4251', '5957', 'D', 'y', 'c', 't', '2851', '943', 'c', '7077', '2935']

SOLUTION:
31757