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.
['6533', 'C', 'x', '3819', 'K', '2507', '8541', 'D', '3287', 'P', 'u', '5559', 'k', 'm', 'T', 'n', 'w', '2715']