On February 18, 2021, Union Corporation purchased 600 IBM bonds as a long-term investment at their face value for a total of $600,000. Union will hold the bonds indefinitely, and may sell them if their price increases sufficiently. On December 31, 2021, and December 31, 2022, the market value of the bonds was $580,000 and $610,000, respectively. Required: 2. & 3. Prepare the adjusting entry for December 31, 2021 and 2022. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)