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.
['7871', '9437', 'a', 'S', 'a', 'Q', '1433', 'j', '3109', 'I', '9995', '9709', 'x', '1855', 'k', 'w', 'n', '77', '2673']