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.
['Z', '6143', '1691', '6751', 'e', '1457', 'e', 't', '509', '1637', '7715', 'S', 'k', 'q']