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, 6, ['7073', '3047', 'O', 'c', 'u', 'G']

SOLUTION: 0

PROBLEM: 4, 8, ['3573', '9813', '3867', 'i', '5291', '1987', '9811', 'A']

SOLUTION: 17089

PROBLEM: 10, 15, ['9317', '1595', '8045', '5997', 'f', '5079', '5533', 'H', '9043', 'Y', 'F', '1347', '9339', '1809', 'r', '7417', 't', '557', 'P', '8175', '6857', 'v', '9821', 'x', '4443', '83']

SOLUTION:
12495