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: 5, 10, ['3907', '1629', 'v', '6711', '8347', 'E', '4067', 'T', '1665', '5735', '4879']

SOLUTION: 19814

PROBLEM: 6, 18, ['6619', 'W', '8541', '1049', '3973', '6575', 'C', '4961', '2469', '3553', '6905', 'p', 'c', 'K', '2663', 'm', 'B', '4379', 'D', '6557', 'r', 'N', '4875', 'u', 'X', '3133', '6353', '1635']

SOLUTION: 31505

PROBLEM: 6, 8, ['6473', '9651', 'V', 'j', '6377', 't', 'K', 'h', '419', 'z', '2625', '9051', '441', '3129', 'v', '7951']

SOLUTION:
0