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.
['n', 'd', '2533', 'O', 'C', '793', 'F', 'A', 'k', '1653', '7093', '4133', '4713', 'b', 'k', '4445', 'd', '239', 'P', 'a', 'o', '5675', 'a', '159']