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, 7, ['o', '3377', 'x', '9385', 'z', '9963', 'S', 'h', 'l', '1525', 'k']

SOLUTION: 22725

PROBLEM: 1, 7, ['173', '5875', 'C', '7417', '3565', '1949', '537', '7707', 'o', 'y']

SOLUTION: 19516

PROBLEM: 2, 21, ['q', '9161', 'q', 'i', '2163', 'n', '3425', '3611', '4429', 'I', '1557', '7997', '8307', 'E', '759', '557', '1813', '1581', 'U', 'G', 'S', 'C']

SOLUTION:
45360