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: 5, 18, ['T', '7117', '7067', 't', '7083', '5711', '6735', 's', '4879', '2553', 'a', 'z', 'Q', '4759', '6243', 'k', 'V', '7803', '2489', 'j', '9449', '8017', '9739', 'F', '1557']

SOLUTION: 45766

PROBLEM: 2, 10, ['9653', '3845', 'm', 'K', 'j', '5041', 'W', 's', 'j', 'A', 'G']

SOLUTION: 8886

PROBLEM: 18, 19, ['Z', 'I', '8361', '3317', 'h', 'y', 'T', '6867', 'c', 'q', '3173', 'd', 'E', 'E', 'x', '3029', '1311', 'D', '3299']

SOLUTION:
3299