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, 16, ['2169', 'o', 'D', '8877', '3351', 'p', 'X', '1143', '9633', 'f', '2507', 'S', '5541', 'B', '4543', 'A', 'f']

SOLUTION: 35595

PROBLEM: 4, 7, ['3291', 'e', 'm', 'E', 'e', '3201', 'E', 'c', '2355', '6491']

SOLUTION: 3201

PROBLEM: 2, 14, ['Q', '3161', 'X', 'g', '3319', 'R', 'a', 'J', 'Y', '981', '2827', 'E', 'W', 'r', '8169']

SOLUTION:
10288