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: 12, 18, ['9047', '1191', '7027', 'b', '1877', 'n', '337', 'n', 'o', '9007', 'd', 'F', '4929', '2707', 'B', 'y', 'o', '2859', '1609', 'N', 'w', 'H']

SOLUTION: 10495

PROBLEM: 4, 14, ['99', 'F', '1297', '7085', 'u', 'w', 'w', '3803', 'F', 'D', 'F', 'L', '5967', '3545', 'E']

SOLUTION: 20400

PROBLEM: 3, 7, ['B', '9125', 'C', 'a', '9429', '1609', 'T', 'u', 't', 'S', '8267', '9301', '9433']

SOLUTION:
11038