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: 21, 23, ['211', '959', '3183', '1605', '3217', '6793', '2239', 'Z', 'T', 'f', '2559', '9249', 'X', '6925', '4373', 'j', 'H', '9575', '3481', 'W', 'p', 'v', 't', '5995', '8765', '201', 'F', 'O', '7251', 'S']

SOLUTION: 0

PROBLEM: 1, 5, ['O', '4521', 'w', '6745', 'W', '7743', '4113', '7179', '9751', '2365', '9161', 'j', '1339', '6927']

SOLUTION: 11266

PROBLEM: 4, 11, ['m', '7271', 'V', 't', 'C', 'M', '9643', 'y', 'L', 'y', '4491', 'g', 'H', '6507', '953', '9811', '3271', 'a', '1405', '9641', '9017', 'D', '7873', '5671', 'U']

SOLUTION:
14134