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.
['R', 'B', 'S', '899', '1049', '1375', '4273', 'o', '2261', 'm', 'M', '6821', 'p', 'f', '9765', 'I', '1465', 'n', 'P']