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.
7, 13, ['M', 'w', '2317', '6597', 'y', 'g', '8955', '2287', '507', '9725', '3879', 'a', 'U', 'R', '3023', 'B']