Teacher: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.
Teacher: Now, understand the problem? Solve this instance: ['8557', '997', '7611', '3647', '1177', '3119', 'w', 'd', 'U', '2291', '5843', 'b', '6171', 'H', '839', 'V', '4707', '2067', '8513', '9469', '7715', 'K', '8795', 'Y', '2869']
Student:
17