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.
['5031', 'P', 'U', 'm', 'z', '97', 'H', 'B', '8537', 'o', 'Z', '393', 'c', '4401', 'y', '4427', 'O', 'V', 'J', 'p', 'b']