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, 21, ['7753', '4315', '7527', 'R', 'W', 'a', '3983', 'w', 'F', '8967', 's', 'Y', 'D', 'I', '5305', '2535', 'u', '135', 'M', 'D', 'G', 't', 'r', 'g', 'W', 'V', '3461', 'P', 'T', 'd']

SOLUTION: 32767

PROBLEM: 3, 15, ['q', '3851', '3631', 'z', '6681', 'Z', '461', 'K', 'P', 'i', '9039', '5929', '1415', 'o', 'O', 'H', '4047', 'B', '7073', '2087', 'I', '6857', '5751', '3633', 'U', '869', 'n', 'h', '7807', '469']

SOLUTION: 27156

PROBLEM: 2, 2, ['7159', 'j']

SOLUTION:
0