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.
['6615', '1391', 'P', 'a', 's', '9695', '8683', '6217', 'X', '1427', 'z', '6375', 'V', '4173', '3753']