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, 4, ['2107', 'l', '7551', '4907']

SOLUTION: 4907

PROBLEM: 6, 6, ['V', '8015', 'N', 'O', 'Z', 'V', 'v']

SOLUTION: 0

PROBLEM: 2, 8, ['X', '4517', '8061', 'l', 'p', 'M', '7699', 'o', 'P']

SOLUTION:
20277