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: 4, 15, ['9021', '2343', '1041', '131', '9027', 'Q', 'v', 'j', '9391', '653', 'p', 'L', '4653', '6163', 'H', 'x', 'N', 'u', 'f', 'L', '6035', 'C', '5355', 'e']

SOLUTION: 30018

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: 1, 2, ['B', '3435']

SOLUTION:
3435