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: 14, 18, ['4235', 'd', '7915', '2595', '1123', '475', '7987', '287', '4659', '45', '737', 'l', 'Z', '5245', '8021', 'g', 'D', '9801', '2327', '339']

SOLUTION: 23067

PROBLEM: 2, 2, ['8023', '9385', '7533', 'd', 'H', '3751', 'A', '1399']

SOLUTION: 9385

PROBLEM: 11, 12, ['2307', '9093', '3153', 'w', '2809', 'E', '7545', 'R', '4189', 'M', '6049', '1463', '2565', 'q', 'p', 'w', '1857', 'B']

SOLUTION:
7512