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: 2, 7, ['o', '3377', 'x', '9385', 'z', '9963', 'S', 'h', 'l', '1525', 'k']

SOLUTION: 22725

PROBLEM: 22, 25, ['681', '2393', 'f', 'g', '5051', '5839', 'T', 'p', '8057', '6929', 'N', '1519', 'G', '8969', '8589', 'T', 't', '4915', 'r', 'M', 'N', '8285', '8607', '4333', '7457', '343', 'f', 'r']

SOLUTION: 28682

PROBLEM: 7, 13, ['N', 'N', '1023', '6811', '5215', '5575', '6235', 'J', '4189', '4515', 'A', '6707', '8691', '5975']

SOLUTION:
30337