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.
['3507', '7365', 'b', 'z', '7921', 'f', '9577', 'w', 'o', '5383', 'S', 'a', '2525']