At the end of the week he knocks at the door.
Then Mother pays him for the milk.
For study and play:
How many quarts of milk does the milkman leave at your door every day?
How many quarts of milk does the milkman leave at your door every week?
How much do you have to pay the milkman each week?
Name the days of the week. Count them.
How many pints make one quart?