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: 1, 1, ['x', 'g', 'X', 'j', 'k', '9821', 'n', 'd', '1709', 'r']

SOLUTION: 0

PROBLEM: 5, 6, ['M', '4965', '7693', 'g', 'G', '695', '2401', '5715', 'P', '8197']

SOLUTION: 695

PROBLEM: 6, 8, ['Y', '7609', '2257', '693', '3107', 'S', 'G', '1373', 'l', '9137', '9215', '6105', 'x', '5549', '5683', 'G', '7667', 'k', 'O', '7081', 'B', 'S', '7693', 'm']

SOLUTION:
1373