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.
['7803', 'k', 'F', '1391', 'l', '7515', 'm', '5229', '2913', '1137', '3019', '5801', '2807', 'c', '3719', 'A', 'z', 'S', '5431']