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: 11, 14, ['H', '4643', 'k', '9583', 'K', '3497', 'Q', '8111', '1837', 'Z', '6885', 'L', '1759', '7777', '3137']

SOLUTION: 16421

PROBLEM: 1, 3, ['p', '5665', '3001']

SOLUTION: 8666

PROBLEM: 1, 12, ['F', 'N', '1875', '6071', '3823', '1901', '3057', '2321', 'f', '1627', '5857', 'r', 'M', '1841', '7197', '5357', 'o', '323', 'm', 'L']

SOLUTION:
26532