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: 2, 15, ['l', '5597', 'M', 'l', '6065', '7949', 'e', '433', '8159', 'N', 'Z', '5597', 's', 'k', '6973', '8387', 'n', 'W', '9895']

SOLUTION: 40773

PROBLEM: 15, 23, ['z', '4587', '8709', '977', 'J', '823', '6437', '3817', 'X', '399', '2265', '3001', '5997', '3393', 'o', '6551', '7305', '9007', '7931', '8235', 'k', 'l', '1523']

SOLUTION: 40552

PROBLEM: 9, 16, ['s', '5729', 'Y', '3237', '497', 'X', '9485', 'w', 'K', '3551', '1275', '8631', 'I', 'l', '2477', 'e', '5881', '9089', 't', 'J', 'T', '9557', '755']

SOLUTION:
15934