An investor company purchased $707,000 of 5% bonds from the investee company on January 1, 2020, with interest payable on December 31. The bonds were classified as Available-for-Sale. The bonds sold for $517,650. Using the effective-interest method, the investor company revised the Available-for-Sale Debt Securities account on December 31, 2020 and December 31, 2021 by the amortized discount/premium of $6,190. and $8,210, respectively.

At December 31, 2020, the fair value of the investee company bonds was $405,000.

At December 31, 2021, the fair value of the investee company bonds was $672,000.

What is the amount of unrealized holding gain/loss related to this investment in 2021? (Very important:Just enter the amount. DO NOT put a plus or minus sign in front of the amount.)