input: Write a python function to create an instance of the Multiplier class and use it to multiply a number.
  assert create_and_multiply(5, 2) == 10
  assert create_and_multiply(3, 4) == 12
  assert create_and_multiply(7, 1) == 7
output: class Multiplier:
      def multiply(self, a, b):
          return a * b
  
  def create_and_multiply(a, b):
      multiplier = Multiplier()
      return multiplier.multiply(a, b)