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.
['6621', 'w', 'f', 'I', '6875', 'z', 'w', '1933', '909', 'K', '3577', '4885', 'D', '9345', 'p', '5677', 'U', 'M', '4059']