On May 10, 2020, Cullumber Co. enters into a contract to deliver a product to Greig Inc. on June 15, 2020. Greig agrees to pay the full contract price of $1,980 on July 15, 2020. The cost of the goods is $1,280. Cullumber delivers the product to Greig on June 15, 2020, and receives payment on July 15, 2020. Prepare the journal entries for Cullumber related to this contract. Either party may terminate the contract without compensation until one of the parties performs.