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.
['4031', 'Z', 'n', '7455', '2761', 'k', '3985', 't', '3077', 's', '645', '3251', '3631']