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.
['K', 'R', 'U', '483', 'S', 'l', 'J', 'Q', 'a', '2451', '1387', 'u', 'T', '8905', '6355', '1201', 'a', '1191', '543', '4273']