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.
['B', 'L', 't', 'X', 'r', 'v', 'B', '6687', 'm', 'E', '5915', 'a', '907', '7847', 'D', 'n', '2309', '7107', '2733', '5605', 'K']