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.
['8731', 'T', 'I', '4269', 'P', '4579', 'Q', 'u', 'g', '5155', '5679', 'K', 'Z', 'n', '7007', '6389', '6765']