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.
['S', '8017', '3709', '2071', 'x', 'h', 'm', 'H', '2119', 'b', '2061', 'n', '2807', 'n', '2797', 'K', '6179', '4937', 'a']