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.
['U', '9727', '4749', 'b', 'k', '6773', '3003', 'S', 'H', 'p', '8263', 'b', 't', '7737', '3315', '2371', 'K', 's', '6799']