Mojave sold her condominium for $500,000 on September 14, 2012; she had paid $330,000 for it in 2004. Mojave collected the selling price as follows: 2012, $80,000; 2013, $320,000; and 2014, $100,000. Mojave appropriately uses the installment-sales method. Prepare a schedule to determine the gross profit for 2012, 2013, and 2014 from the installment sale.