How much money can be earned by an eight-dollar box lunch depends on one of our raw materials and cost, whether we are vegetarian or several dishes with meat. If we say a three-course meal and an eight-dollar box lunch, we will eat rice and get rid of the cost of the box lunch. We can earn about five yuan. If we are a meat dish, we can only earn three or four dollars. The key is what kind of food and service we provide.