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.
['681', 'H', 'P', 'U', '9135', 'S', 'w', 'r', 'z', '6751', 'R', '4165', 's', 'u']