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, 11, ['8237', '8149', '7077', '2199', '7839', 'c', 'j', 'Y', '845', '2273', 'n', 'Q']

SOLUTION: 28382

PROBLEM: 8, 26, ['n', '9063', 'c', 'k', '7515', 'm', '2261', '4297', '9817', '7599', '1669', 'l', '9837', '3021', 'Q', '3991', 'r', 'B', '8615', 'J', '5641', '7637', '469', '3571', '2265', '3969']

SOLUTION: 72398

PROBLEM: 2, 8, ['6901', '3901', '5101', '4297', '1099', 'q', 'z', '6615', 'z', '6859']

SOLUTION:
21013