input: 
  from typing import Union
  
  def multiply(a: Union[int, float], b: Union[int, float]) -> None:
      """
      Multiplies two input numbers and prints the result.
  
      >>> multiply(3, 4)
      12
      >>> multiply(2.5, 2.5)
      6.25
      """
      result = a * b
      print(result)
  
output:     result = a * b
      print(result)