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', 'z', 'p', '2763', '5909', 'O', '3137', 'N', 'l', '2593', '5765', 'R', 'b', 'e', 'C', '3863']