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.
['7253', '6983', '2943', '509', '4225', 'Y', '1537', '9283', '2901', '6533', '7457', '6823', '6737', 'a', 'P', 'J']