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: 1, 2, ['j', '3613']

SOLUTION: 3613

PROBLEM: 10, 11, ['L', 'Z', '4501', '4131', 'a', '8057', 'K', 'P', '4713', '8889', 'b', '3927', 'k', '6005', 'T', 'w', 'S', '3963', '2727']

SOLUTION: 8889

PROBLEM: 13, 18, ['3475', 'o', '3353', '3225', 'I', '3297', 'Z', 'i', '7995', '5299', '7275', '3123', '1975', '4599', 's', '2489', '8733', 'N', '4563']

SOLUTION:
17796