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.
['3399', 'e', '1905', '4273', '665', 'M', '7329', 'g', 'l', 'z', 'z', 'U']