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.
['R', 'a', '2399', '1939', '1867', 'n', 'o', '7813', 'Z', '7725', 'J', '3723', 'X', '4051', '8079', 'J', 'P', 'v', 'a', '7331']