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.
3, 6, ['D', 'U', '5989', 'x', '6337', '4343', '247', 'g', '3439', '2823', '9311', '6721', 'u', 'X', 'T', 'g', 'D', '9143', 'n', '259', '8465']