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: 3, 10, ['x', '5071', '6421', '5701', 'l', '5659', 'P', '7975', 'z', 'p', 'B', 'q', '1275', 'v', '6471', 'o', 'Q', 'F', '1845', '6063', '3277', '9039', '4209', '2869', '2293', '4517', '577', '3375']

SOLUTION: 25756

PROBLEM: 5, 11, ['5641', 'c', 'z', '5969', 'w', '9149', 'r', 'B', 'y', '3315', 'M', '8087', 'j', '1159', '9365', 'b', 'a', 'y', '6957', '5735', '9739', '133', 'm', '4887']

SOLUTION: 12464

PROBLEM: 8, 18, ['Z', 'w', 'q', 'e', 'f', '5837', '1187', 's', '5515', '8001', 'd', '8281', 'U', 'w', '5339', '8631', '3115', 'A', 'D', 'U', '6825', '3849', '3731', 'j', 'n', '4741', '3105', '7395', '6109', 'L']

SOLUTION:
38882