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, 5, ['b', 'a', 't', 'l', '8337', 'L', '913', 'O', '1009', '3615', 'u', 'E', 'Y', 'h', '51', '1673']

SOLUTION: 8337

PROBLEM: 20, 26, ['8183', 'I', 'o', 'B', '7567', '4953', '8133', '2883', 'g', 'D', '865', 'a', 'y', 'Z', 'F', '3211', 'e', 'X', '5135', '7257', 'G', '1577', '7977', 'X', 'z', 'e']

SOLUTION: 16811

PROBLEM: 3, 9, ['q', 'P', 't', 'I', 'w', 'N', 'V', '1801', 'Q', '8433', 'l', '5759', 'Q', '3939', '7363']

SOLUTION:
1801