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: 14, 15, ['B', 'i', 'F', 'F', '7361', 'U', '6625', 'x', '7875', 'm', '5637', '9533', 'y', 'e', '5049', '3809', '1', '8269', '435', '2363', '1679', 'e', '8775', 'A', 'l', '161']

SOLUTION: 5049

PROBLEM: 1, 5, ['E', '8579', '229', 'X', '1579', 'C', '5091']

SOLUTION: 10387

PROBLEM: 19, 21, ['1739', 'T', 'c', '4455', '3511', 'N', 'T', 'g', '3575', '7983', 'Y', '189', '7983', '9507', '4049', 'R', 'd', 'E', 'L', '4161', '6981', 'K', 'l', '7333']

SOLUTION:
11142