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: 17, 22, ['D', '7897', '1603', 'L', '5485', 'S', 'V', '1361', 'a', '9131', 'm', 'V', 'l', 'v', 'Z', '4831', '9561', '1185', 'y', 'D', '1853', '2225', 'j', 'r']

SOLUTION: 14824

PROBLEM: 14, 20, ['4221', '2381', 'i', 'm', 'c', 'F', '9703', '3529', 'a', '83', 'D', '1023', 'I', 'c', 'W', '7163', '341', 'w', '7855', '2317', '8989', '3629', 'b']

SOLUTION: 17676

PROBLEM: 19, 22, ['9123', '9447', '4515', 'b', '8315', '8905', '2345', 'V', '711', 'W', '7507', '7447', 'm', '125', 'A', 'r', 'm', 'm', '9209', '4091', 'D', '7871', 'x', '8553', 'b', '2187', 'O']

SOLUTION:
21171