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.
['1571', '7661', 'R', 'O', 'y', 'l', 'J', '7899', '8507', 'U', 'X', 'u', '4287']