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: 2, 10, ['907', '3413', 'y', 'Y', 'y', '9671', '6631', 'g', '8803', '3127', 'k', 'Y', '413', '3871', '909', 'G', '4431', '6489', '7291', 'J', 'W', '6423', '641', 'G', '2545', '4471', '3717', '2671', '561']

SOLUTION: 31645

PROBLEM: 12, 20, ['V', 'H', '5509', 'J', '887', '6361', '4273', '1017', '5167', 'G', 'g', '5185', '2617', 'h', 'Y', '7697', '5075', 'F', '2675', '29', 'K', '2081', 'R', '7011']

SOLUTION: 23278

PROBLEM: 16, 18, ['1389', 'w', '6889', 'r', '6403', '3613', 'U', '8999', '1501', '6799', '7033', 'r', '6183', 'N', '1933', 'U', 'O', '4217', '5519', '6269']

SOLUTION:
4217