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: 5, 9, ['6337', 'o', '5881', 'w', 'R', 'M', 'z', 'y', 'W']

SOLUTION: 0

PROBLEM: 8, 9, ['6753', 'Y', 'v', '1365', '1033', 'l', 'A', '203', 'J', '8391', 'i', '1813', 'V', 'D', 'S', '4981', 'o']

SOLUTION: 203

PROBLEM: 7, 12, ['8465', '6641', 'M', 'l', '6745', 'c', '2975', '9123', '2269', 'k', 'l', 'z', '3245']

SOLUTION:
14367