Rudy is renting a cabin on Lake Tahoe. He wants to make a recipe for hot chocolate that calls for 1 cup of milk. Unfortunately, the cabin is not well stocked, and he has only a 1-gallon container of milk, a 4-cup saucepan, and an empty 12-ounce soda can. Describe or illustrate a process that Rudy can use to measure exactly 1 cup of milk. (There are 8 ounces per cup and 16 cups per gallon.)