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: 8, 30, ['5585', '6253', '4067', '2991', '1809', 'y', '8803', 'e', 'T', '695', 'b', '8257', '6427', 'm', '2647', '2207', '3241', '3379', 'L', 'B', 'X', 'R', 'v', 'P', '3989', 'n', 'U', '6143', 'N', 'Y']

SOLUTION: 36985

PROBLEM: 6, 7, ['6947', 'l', 'd', '6531', 'X', 'l', '9741', '6553', '9905', 'n', 'Q', 'Y', '2063']

SOLUTION: 9741

PROBLEM: 11, 16, ['p', 'U', '6901', 'K', '8563', '959', 'y', 'V', '1445', '1861', '8281', '5269', '4267', 'b', 'k', '5279', 'V', '9147', 'F', 'Y']

SOLUTION:
23096