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.
['6427', '4717', '1147', 'O', '2209', 'j', '7299', 'S', '2363', 'x', 'h', '5373', 'H', 'l', 'D', 'n', 'U']