In this task, you are given an input list. A list contains several comma-separated items written within brackets. You need to return the count of all the numerical elements in the given list. Return 0 if no numerical element in the list.
['D', '8793', 'J', 'a', 'S', '1603', 'n', 'J', '2101', 'b', 'y', '2545', '891', '267', 'W', '6245', '3643', '2257']