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, 5, ['1427', '7597', '765', 't', '7057', 'f', 'B', 'k']

SOLUTION: 7057

PROBLEM: 3, 6, ['d', 'v', 'd', '5043', '8989', 'w', 'Y']

SOLUTION: 14032

PROBLEM: 5, 6, ['M', 'D', 'J', '4629', 'l', 'i', '4141', 'V', 'P', 'e', 'u', 'L', 'V', 'p', '1883', '5155', 'G', 'S', '7879', 'n']

SOLUTION:
0