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: 5, 18, ['T', '7117', '7067', 't', '7083', '5711', '6735', 's', '4879', '2553', 'a', 'z', 'Q', '4759', '6243', 'k', 'V', '7803', '2489', 'j', '9449', '8017', '9739', 'F', '1557']

SOLUTION: 45766

PROBLEM: 2, 16, ['2169', 'o', 'D', '8877', '3351', 'p', 'X', '1143', '9633', 'f', '2507', 'S', '5541', 'B', '4543', 'A', 'f']

SOLUTION: 35595

PROBLEM: 3, 9, ['157', 'T', '8965', 'd', '4291', '7101', 'I', '1733', '7305', '197', '2835', '6663', 'g', 'I', '9907', '9305', 'd', '8003', 'c']

SOLUTION:
29395