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.
['U', 'e', 'z', '6643', '1573', '4539', '3615', '5425', 'y', 'C', 'Y', '3899', '3427', '7739', 'f', '4249', '739', 'q', 'l', 'y', 'a', 'w', 'g', 'R', 'U', 'A', '8309']