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: 9, 16, ['v', '5691', '4973', 'J', 'w', '539', '6957', '9953', 'L', 'c', '5879', 'b', 'g', '6681', 'C', '753', '5835', '1023', 'w', '5713', '159', 'X', 'z', 'i', '8379', '9753', '195', 'X']

SOLUTION: 13313

PROBLEM: 9, 9, ['V', 'x', '3763', '8367', '3369', '6695', 'p', 'P', 'L', 'g', 's', '5117', 'n', '5097', '2407', '6337', '5437', 'o', '3023', 'D', 'g']

SOLUTION: 0

PROBLEM: 4, 20, ['J', 'I', '303', 'U', '6205', '4687', '115', 'a', '1075', '5015', 'o', '169', '5657', '8871', 'O', 'u', '1965', 'H', '4219', '5413', 'h', '7325', '3437', '6167', 'k', '2011', 'v']

SOLUTION:
43391