E18-3 (LO1, 2) Existence of a Contract On May 1, 2020, Richardson Inc. enteres into a contract to deliver one of its specialty movers to Kickapoo Landscaping Co. The contract requires Kickapoo to pay the contract price of $900 in advance on May 15, 2020. Kickapoo pays Richardson on May 15, 2020, and Richardson delivers the mover (with cost of $575) on May 31, 2020. Instructions: (a) Prepare the journal entry on