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: 12, 17, ['k', '9879', 'R', '2595', 'c', 'p', '3825', 'y', 'i', '6281', '927', 's', '5407', '9137', 'F', '8207', 'L', 'I']

SOLUTION: 22751

PROBLEM: 25, 26, ['9367', 'G', 'c', '4997', 'g', 'r', '2893', 'T', '6693', 'I', '5127', 'N', '4333', '6905', '8539', 't', 'y', 'f', '8341', 'e', 'g', '8749', '3525', 'g', '6263', '321']

SOLUTION: 6584

PROBLEM: 3, 4, ['i', 'o', '5091', '4111', '7205', '4457', '7507', 'Y', '5549', '7039', 'r', 'E', '2593', '2899', '8053', 'q', '1563', 'b', '853', '533', 'P', '2623']

SOLUTION:
9202