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', '2175', '1911', 'j', 'R', 'w', 'L', '8337', 'A', 'Q', '731', '8111', 'S', 'Z', 'P', 'D', '3221', 'n', '4857']