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: 20, 26, ['8183', 'I', 'o', 'B', '7567', '4953', '8133', '2883', 'g', 'D', '865', 'a', 'y', 'Z', 'F', '3211', 'e', 'X', '5135', '7257', 'G', '1577', '7977', 'X', 'z', 'e']

SOLUTION: 16811

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: 5, 9, ['6403', 'T', 'I', 'D', '3551', '9921', '5529', 'u', 'Z', '8813', 'C', 'm', '3225', 'L', 'm']

SOLUTION:
19001