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', 'O', '3543', 'P', '9569', '6409', 'H', 'u', 'R', 'm', 'r', 'T', '3977', 'h', '9285', '6637', '7809', '6713', 'k', '3883', 'f', '3215', '3287', 'D', '6375', 'Z']