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', '7721', 'n', 'E', 'b', 'K', '3553', '1369', '2151', 'A', '6823', '2701', '2511', 'W', '8611', '2969', '7047', '4871', '6329', 'H', 'u']