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: 12, 24, ['4727', 'q', 'L', '969', '6799', '6223', '8967', 'e', '8589', '4399', '3237', 'M', '5323', '1477', 'n', '1553', 'r', 'J', '4789', 'h', 'J', 'M', 'g', 's', 'N', 'O']

SOLUTION: 13142

PROBLEM: 15, 22, ['J', '4995', 'c', 'x', '6981', '1197', '217', '7819', '9859', '7761', 'p', '3099', 'C', '7623', '4365', '8041', '3547', '8751', 'G', '3669', '7039', 'v', 'r']

SOLUTION:
35412