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.
['5409', '2631', 'P', 'f', '6257', 'C', 'F', 'd', '6833', 'X', 'S', '7921', '8347', '97', '639', 'g', '2511', 'l', 'E', '5393', '5421', 'J', '8327', '7305', '6337', '649', 'B', '8587', 'P', 'z', 'o']