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.
['x', 'p', 'H', '1545', 'Q', '1789', 'y', 'v', 'U', '7889', '8743', '9221', 'o', 'f', 'n']