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.
['W', 'g', 'U', 'S', '139', '3561', 'g', '3295', 'z', 'l', 'g', '2981', '6437', '9729', 'Y', 'v', '6579']