National Adversting began operations in May 2020. The Company engaged in the following transactions during its first month of operations.

May. 1 National and several others invested $650,000 cash in the business in exchange for 10,000 shares of capital stock. May. 6 The Company purchased office facilities for $300,000, of which $60,000 was applicable to the land and $240,000 to the building. A cash payment of $100,000 was made and a note payable was issued for the balance of the purchased price. May. 10 Computer equipment was purchased from InstaTech for $6,000 cash. May. 12 Office furnishings were purchased from Goldens Furniture at a cost of $12,000. A $1000 cash payment was made at the time of purchase, and an agreement was made to pay the remaining balance in two equal installments due June 1 and July 1. May. 20 Office supplies were purchased from Office care for $750 cash. May. 25 National discovered that it paid too much for a computer printer purchased on May 10. The unit should have cost only $600, but it was charged $800. InstaTech promised to refund the difference within seven days. May. 28 Mailed Goldens Furniture the first installment due on the account payable for office furnishings purchased on May 12. May. 29 Received $200 from InstaTech in settlement of the account receivable created on May 25.

Required: Solve those transactions