If the US postal service delivered 140 billion pieces of mail to an estimated 158 million addresses in a single year. On average, how many pieces of mail would each address receive? Round your answer to the nearest whole piece of mail. If the US postal service delivered 140 billion pieces of mail to an estimated 158 million addresses in a single year. On average, how many pieces of mail would each address receive? Round your answer to the nearest whole piece of mail