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: 11, 14, ['H', '4643', 'k', '9583', 'K', '3497', 'Q', '8111', '1837', 'Z', '6885', 'L', '1759', '7777', '3137']

SOLUTION: 16421

PROBLEM: 4, 6, ['v', 'f', '5021', 'v', 'M', '6345', '1159', 'C', '8173', '6299', 'r', '8877', 'a', 'm', 'k', '2935']

SOLUTION: 6345

PROBLEM: 9, 23, ['2959', 'H', '7105', 'b', '3147', '7681', 'd', '3093', 'h', 'i', 'n', '6775', 'Z', 'm', 'N', 'x', '6809', '7619', '1601', '4409', '1027', 'u', '4387', '355', 'u', 'v', '2439']

SOLUTION:
32627