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.
['2617', 'X', 'N', 'R', 'U', '2189', '6277', '3627', '759', '6597', 'm', '4711', 'U', '297', '3565', 'o', 'm']