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, 10, ['r', 'A', 'l', '7169', '3249', 'T', 'O', 'g', 'F', 'M', 'R', '171', 'M', '2449', '3749', 'f']

SOLUTION: 10418

PROBLEM: 3, 5, ['a', 'q', 'a', '4295', 'z', '675', '3975', 'P', 'e', '4231', '2547', 'V', 'S', '5285', 'Y', 'J']

SOLUTION: 4295

PROBLEM: 1, 1, ['4455', 'p', 'W', 'z', '8607', '7167', 'I', '6717', 'm']

SOLUTION:
4455