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: 1, 5, ['E', '8579', '229', 'X', '1579', 'C', '5091']

SOLUTION: 10387

PROBLEM: 12, 14, ['6255', 'M', '3541', 'A', 'I', 'W', '2289', '9861', 'L', '2527', 'h', '355', '7033', 'p', 'f']

SOLUTION: 7388

PROBLEM: 4, 6, ['6087', 'h', 'x', '4707', '3341', 'p', '1723', 'z', 'Q', '301', 'Y', '7291', '6821', 'B', '911', '373', '2561', 'z', 'b']

SOLUTION:
8048