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: 6, 7, ['6261', 'l', 'T', 't', 'X', 'G', 'Y', 'f']

SOLUTION: 0

PROBLEM: 11, 14, ['7277', '3335', 'z', 'R', 's', '8267', 'q', '2743', 'w', '4003', 'G', 'O', 'Y', '4063', 'q', '7001', '7381', 'D', '6247', '7211', 'I', '2277', '7543', 'Y', '8243', '3127', 'V', '8709']

SOLUTION: 4063

PROBLEM: 13, 15, ['P', 'h', '3475', '8285', '2853', 'A', 'C', '6969', '7975', 'p', '1001', 'G', 'p', 'T', '4011', 'x', '1891', 'J']

SOLUTION:
4011