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.
['8421', '8697', 'I', 'p', '7651', '9243', 'i', '4321', 'D', '7407', '403', '3001', 'P', '8455', 'X', 'r', 'x', '7475', 'a', 'T']