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.
['J', '1561', '221', 'w', 'z', '2971', '2929', 't', 'h', 'U', 'f', '1147', '4827', 'Z', '6645']