answer: #Person1# tells #Person2# how Mac and Dick thought of to avoid washing the dishes and why there're so many chain stores of McDonald's.
documents: #Person1#: Do you know the first McDonald's restaurant had no seats for customers to sit on?
  #Person2#: In that case, people had to stand eating, didn't they?
  #Person1#: No, most people bought the food and took it away. And that's the way Mac and Dick thought of to avoid washing the dishes.
  #Person2#: That's a good idea, but who are Mac and Dick?
  #Person1#: They were two brothers who ran the first McDonald's. Later a businessman called Ray Kroc asked to buy their business.
  #Person2#: Did the two brothers agree?
  #Person1#: Yes, they sold the business to Ray for $27,000,000.
  #Person2#: So today there are so many chain stores of McDonald's, right?
  #Person1#: Exactly, but which McDonald's do you think sells the most hamburgers in the world every day?
  #Person2#: I guess a certain one in New York.
  #Person1#: No, no. It's the Hong Kong's McDonald's.
  #Person2#: It's hard to believe.