This company puts fast-food yummies in a whole lot of tummies. YUM! Brands is the largest fast-food operator in the world in terms of number of locations, with more than 40,000 outlets in about 125 countries. (It trails only hamburger giant McDonald's in sales.) The company's flagship chains include #1 chicken fryer KFC (with more than 17,400 units), top pizza joint Pizza Hut (more than...