John wants to estimate the market potential for a low-carbohydrate fruit juice in the U. S. His research shows that 50% of the population of the U. S. drinks fruit juice; 10% of all fruit juice drinkers are interested in low-carb juice; the amount of fruit juice consumed per month by those who drink juice is 2 gallons; and the average price per gallon is $5. Assuming that the total population of the U. S. is 300 million, the market potential for low-carb fruit juice per year estimated by John is