Mojave sold her condominium for $500,000 on September 14, 2010; she had paid $330,000 for it in 2002. Mojave collected the selling price as follows: 2010, $80,000; 2011, $320,000; and 2012, $100,000. Mojave appropriately uses the installment-sales method. Prepare a schedule to determine the gross profit for 2010, 2011, and 2012 from the installment sale.