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: 2, 2, ['8023', '9385', '7533', 'd', 'H', '3751', 'A', '1399']

SOLUTION: 9385

PROBLEM: 7, 19, ['465', 'S', 'G', '7463', '6947', '3065', 'F', '2275', 'a', '6253', '5785', '7447', 'T', '1123', 'X', 'l', '4659', '7201', '8421', 'F', 'J', '2347', 'I', '4397', '3881']

SOLUTION:
43164