In Problems 41–48, you need to make some assumptions before you estimate your answer. State your assumptions and then calculate the exact answer.

If the U.S. annual production of sugar is 30,000,000 tons, estimate the number of grains of sugar produced in a year in the United States. Use scientific notation. (Note: There are 2,000 lb per ton; assume there are 2,260,000 grains in a pound of sugar.)