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, 10, ['2797', 'm', '439', '5677', '6719', '1587', 'I', 'I', 'w', '8483', '7341', '341', 'H', 'K', '7727', '4467', 'L']

SOLUTION: 22905

PROBLEM: 5, 10, ['3907', '1629', 'v', '6711', '8347', 'E', '4067', 'T', '1665', '5735', '4879']

SOLUTION: 19814

PROBLEM: 6, 23, ['s', '5425', '7485', 'I', 'r', 'I', '3943', '4067', '3773', '2459', '1525', '2093', '1103', '7373', 'h', 'j', '3209', 'o', 'Q', 'I', '1295', '4569', '4301', 'C', 'N', '269']

SOLUTION:
39710