At the beginning of the month, no one gave him some money, and the grocer came back to give him this time's food money from this money. Usually, remember that no one has eaten a meal. You can list the names, list the dates and make a table. Tick every day. By the end of the month, calculate how much money is spent, how much money is spent by an average person, and then multiply it by the number of times everyone eats.