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.
['6745', '2123', '3887', '5309', 'k', '1637', 'H', 'B', '7063', '4503', '6831', '5859', '8525', '5673', '8013', 'p', '8557', 'G', 'H', '5743', '7775', 'I', '3899']