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.
['7059', 'D', 'Z', 'm', '525', '1071', 'i', '421', '8813', 't', '415', '2743', '1713', '5915', 'm', '9143', 'L', '5455', '9675', '7409']