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.
['5889', '1547', 'D', 'M', 'R', '4807', 'K', '1637', '3949', '4689', '4635', '7399']