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: 9, 9, ['y', '689', 'X', 'X', 'u', '1839', '8779', 'O', 'O', 'A', '1559', 'A', 'U']

SOLUTION: 0

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: 7, 7, ['2965', 'm', 'p', '5763', 'j', 'T', 'G', 'k', '7653', 'L', 'u', '167', '5065', '3425', 'y', 'c', 'k', 't', 'M', 'p', 'f', '709', 'o', 'P', 'f', 's', '9595', '3049', 's']

SOLUTION:
0