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.
['a', 'W', 'Z', '8359', '2027', 'G', 'G', '6805', '2507', '3699', '215', 'Y', '6861', 'l', 'l', 't', '5369', '9145', '5749', '3667', '5377', 'I', 'o']