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.
['J', '2155', '7289', 'R', '4965', '5165', 'B', '7425', 'J', 'l', '6245', '8569', '3715', 'U', '5727']