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: 7, 19, ['8309', 'O', '1491', 'k', '2521', '1161', 'y', '3215', '8345', '1949', '9883', 'g', 'z', 'B', 'S', 'j', 't', '2841', 'j', '3333', 'S', 'w', '2283', '793', 'w', 'q', 'p', 'J', '7979']

SOLUTION: 26233

PROBLEM: 3, 14, ['Y', '9099', 'H', 'D', 'M', '1111', 'N', '4939', 'b', 'Y', '13', 'L', 'J', '4045', '2005', 'F', 'O', '1495', 'J', 'h', 'G']

SOLUTION: 10108

PROBLEM: 3, 14, ['f', 'm', '6223', '6441', 'g', '6633', '8967', '1951', '6681', 'R', 'U', 'R', '9395', '9295', 'q', '2711', 'q', '9365', 'Y', 'c', 'G', '181', 'C', '2909']

SOLUTION:
55586