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: 4, 6, ['g', '8871', 'q', '597', '8871', '277', 'f', 'e', '2779']

SOLUTION: 9745

PROBLEM: 19, 23, ['8277', '3337', 'G', 'N', '2365', 'S', 'Y', 'l', '5871', '2373', '7441', '2095', 'N', 'J', 'Q', '5493', 'Q', 'g', 'E', 'i', '4825', '5543', 'i', '1737', 'y', '1463', 'r', 'F']

SOLUTION: 10368

PROBLEM: 10, 14, ['3645', '4115', 'D', '3741', '6275', '7629', 'g', 'C', '6137', '4265', '8115', 'M', '9331', 'i', '1633', '7401']

SOLUTION:
21711