Marjorie sold her condominium for $500,000 on September 14, 2014; she had paid $330,000 for it in 2006. Marjorie collected the selling price as follows: 2014, $80,000; 2015, $320,000; and 2016, $100,000. Marjorie appropriately uses the installment-sales method.

Prepare a schedule to determine the gross profit for 2014, 2015, and 2016 from the installment sale.