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.
['D', '6713', '5343', 'z', 'u', '4329', '1465', 'r', 'd', 'B', '1435', 'B', '577']