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: 3, 15, ['l', '7213', '6849', '4327', 'V', 'S', '3773', '2583', 'f', '5031', 'J', '5263', 'w', '9777', '2753']

SOLUTION: 40356

PROBLEM: 6, 18, ['5051', 'g', 'C', 'p', 'O', 'i', 'E', '4947', '5345', '8453', '4967', '3749', 'F', 'P', '5045', 'o', '5605', 'H', '9319', '5471', 'F', 'B', 't', 'H']

SOLUTION: 38111

PROBLEM: 9, 12, ['8515', '4987', '7905', 'K', 'u', '2791', 'o', '8955', 'j', 'x', 'e', 'Z', '6231', '4913', '7933', '4079', '2945', '475', '6415', 'V', '8767', 't', 'c', '919', 'M', '5501', 'y', 'S', 'L', 'Q']

SOLUTION:
0