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: 2, 10, ['907', '3413', 'y', 'Y', 'y', '9671', '6631', 'g', '8803', '3127', 'k', 'Y', '413', '3871', '909', 'G', '4431', '6489', '7291', 'J', 'W', '6423', '641', 'G', '2545', '4471', '3717', '2671', '561']

SOLUTION: 31645

PROBLEM: 25, 27, ['6411', '2467', 'y', '4973', 'C', '8853', 'H', 'G', 'a', 'N', '3759', '7803', '5403', 'Z', '4047', '6283', 'v', '5437', 'p', 't', 'S', '7605', 's', 'Z', '7537', 'Y', 'U', 'W', '2147', 'K']

SOLUTION: 7537

PROBLEM: 2, 8, ['g', '2977', '7633', 't', 'C', '4467', 'w', 'v']

SOLUTION:
15077