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: 22, 25, ['875', 'x', '229', 'c', '6921', '2739', '8299', '2043', '9471', 'N', '8051', 'K', 'k', 'l', '7453', '8873', '5807', 'p', 'U', 'G', 'R', 'w', '4367', '3631', 'j', 'G', '7537', 'l', 'D', 'q']

SOLUTION: 7998

PROBLEM: 16, 17, ['5985', '1925', 'r', 'H', 'p', 'L', '5019', 'y', 'O', '6575', '9729', 'S', '2497', '43', 'u', '317', 'p', '3043', '3247', 'z', 'O', '8379', '7715', '8399']

SOLUTION: 317

PROBLEM: 5, 5, ['Z', '257', 'y', '1431', '2673', '3143', '5405', 'A', '813', 'I', '3345', 'A', '3557', '201', '3461', '5951', 'f', 'i', 'R', '6183', '3525', '8941', 'O', 't', 'r', '8439', '3695']

SOLUTION:
2673