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, 15, ['9021', '2343', '1041', '131', '9027', 'Q', 'v', 'j', '9391', '653', 'p', 'L', '4653', '6163', 'H', 'x', 'N', 'u', 'f', 'L', '6035', 'C', '5355', 'e']

SOLUTION: 30018

PROBLEM: 1, 14, ['n', 'v', '7825', '5951', 'k', '1733', 'c', 'u', 'C', 'c', 'D', 'g', '9231', 'G']

SOLUTION: 24740

PROBLEM: 10, 13, ['U', 'B', 'V', '6639', 'k', 'A', 'G', '7833', '833', 'j', 'l', '889', '3151']

SOLUTION:
4040