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, 16, ['v', 'd', '6599', 'd', '9305', '6377', '5009', '3797', '3861', '9421', 'G', 'N', 'm', 'x', 'E', '7047', 'W', '5629', 'j']

SOLUTION: 51416

PROBLEM: 1, 3, ['7641', '5147', '995', 's', '6697']

SOLUTION: 13783

PROBLEM: 8, 23, ['7823', 'p', '6127', '2541', 'M', '4479', 'D', '5431', '9591', '1935', '7487', '8301', '7817', 'r', '4335', 'M', '1471', '5119', 'H', 'd', 'V', 'k', 'k', 'J', '4827', 'x', 'y', 'l', 'Q']

SOLUTION:
51487