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', 'J', 'q', '4393', '8713', 'x', '7971', '3825', 'c', 'R', 'B', 'g', '7871', '2393', '4589', 'z', '4143', '8923']