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.
Input: 3, 12, ['d', 'd', 'h', 'd', 'q', 'q', 'a', 'y', '6399', 'G', 'A', 'n', '1425', 'R', 'y', '563', '8829', '7311', '5419', '1203', '8527', '683', '8147', 'Z', '7511', 'n']

6399