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.
['Q', 'J', '7343', '6239', 'Y', 'L', '3939', 'N', 'b', '3197', 'q', 'y', 'h', '7885', '2551', 'H', 'J', 's', 'Z', 'k', '6821']