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', '1125', 'S', '509', 'R', 'Q', 'e', '1451', '3015', '5667', 'u', 'K', 'L', '4435', 'a', 'a', 'X', 'z', '6901', 'X', 'm']