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: 10, 11, ['J', '5319', '1625', 'z', '275', 'B', '6901', 'b', 'X', '8669', '2307', '3117', 'K']

SOLUTION: 10976

PROBLEM: 6, 14, ['707', 'L', '8503', 'x', 'Y', '921', '8415', '6449', '5711', 'd', '591', 'd', '3827', '5569', 'g', 'U', 'v', '7781', 'E', 'z', '4751', '8541', 'c', 'P', '8037', 'X']

SOLUTION: 31483

PROBLEM: 2, 16, ['V', '9851', 'I', 'W', '4369', '9027', 'A', 'F', '1553', '5671', '3527', '3641', '2667', '5669', '7125', 'h', 'W', 'a']

SOLUTION:
53100