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: 4, 4, ['t', 'Z', '8689', 'I', '5589', 'H', 'Z']

SOLUTION: 0

PROBLEM: 6, 18, ['5051', 'g', 'C', 'p', 'O', 'i', 'E', '4947', '5345', '8453', '4967', '3749', 'F', 'P', '5045', 'o', '5605', 'H', '9319', '5471', 'F', 'B', 't', 'H']

SOLUTION: 38111

PROBLEM: 8, 11, ['4849', 'y', 'm', 'I', '9251', '4337', 'O', '2743', 'v', 'd', '8781', 'Z']

SOLUTION:
11524