Math

Peter owns a number of apartments, which he rents to tenants on a monthly basis. At the end of every year, he projects his monthly rental income for the next year by calculating the product of his average monthly rental income for the next year by calculating the product of his average monthly rent in the previous year and the number of apartments he owns, and then subtracting 10 percent for vacancies to keep his projection conservative. In 2015, Peter owned 6 apartments and his average rent was $740 per month. What is Peter’s projected monthly income, in dollars, for 2016? (Disregard the $sign when gridding your answer.)