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.
12, 18, ['F', '6107', '2349', '7531', '431', 'k', 'l', '7865', 't', '4317', '9453', '1881', '7059', '4053', '4149', '9109', 'l', 'B']