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.
['833', '5769', '5589', 'e', '8115', 'G', 'F', '6839', '5811', '6555', '9075', '1721', 'z', '6109', 'E', 'a']