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: 5, 11, ['9535', 'L', '5957', 'm', 'B', 'W', '2105', '4959', 'f', '395', 'a', 'W', 'C']

SOLUTION: 7459

PROBLEM: 1, 11, ['W', 'c', '8889', '2649', '6183', '1489', 't', 'o', '4925', '4411', 'b', '5657', 'i', 'q', 'z', 't']

SOLUTION: 28546

PROBLEM: 1, 12, ['V', '6897', '5511', 'i', '2187', 'n', '4491', 'j', 'W', 'O', '5943', '4341', '7833', 'R', 'o', 'f', 't', 't', 'D', '7823', 'F', '5189', '8525', 'a']

SOLUTION:
29370