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.
['U', '9791', '2023', '8929', 'i', 'U', '4021', '3449', 'g', 't', 'n', '2635', 'g', 'q', 'a', 'S']