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: 6, 6, ['I', '8721', '6901', '737', '5767', '9771', 'h']

SOLUTION: 9771

PROBLEM: 2, 8, ['147', 'w', 'Z', 'T', '4591', 'p', 'M', 'O', 'K']

SOLUTION: 4591

PROBLEM: 1, 3, ['3793', '6737', 'G']

SOLUTION:
10530