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, 6, ['j', 'j', 'W', '1351', 'B', 'e', '2585', '8831', '7465']

SOLUTION: 1351

PROBLEM: 2, 4, ['L', '8053', '8121', 'J', 'H', '7591', 'U', 'm']

SOLUTION: 16174

PROBLEM: 5, 9, ['4259', '8167', 'z', 'v', 'S', '2007', 'B', '7615', '1857', 'G']

SOLUTION:
11479