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.
['5905', 'f', 'J', 'k', '2989', '9007', '5473', 'I', '6783', 'L', 'b', 'j', 'z']