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: 3, 15, ['i', '3795', '7239', '6365', 'i', '4003', 'v', '6905', '9227', 'u', 'e', '5621', 'M', '7481', '4721', 'I', 'e', 'o', 'K', 'f']

SOLUTION: 51562

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: 13, 15, ['7675', '8897', 'b', 'y', 'V', '4671', '867', 'P', '2799', 'G', '3747', '4207', '9855', 'I', 'n', '8795', '4599', '7275', '7505', 'S', '5217', 'D']

SOLUTION:
9855