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.
['R', 'B', '6303', 'I', 'n', 'k', 'i', '6101', '3959', '2633', 'P', '3875', '9151', '9097', '9415', 'a', 'u']