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.
['P', 'p', '8483', 'c', 'x', '5821', 'b', 'm', '1675', 'U', 'p', 't', '1837', '9459', '7869', 'R']