input: from typing import List
  
  def count_even_numbers(lst: List[int]) -> int:
      """
      Identify the number of even numbers present in a given list of numbers.
  
      >>> count_even_numbers([1, 2, 3, 4, 5])
      2
      >>> count_even_numbers([10, 15, 20, 25, 30])
      3
      """
      return len([x for x in lst if x % 2 == 0])
output:     return len([x for x in lst if x % 2 == 0])