in January 1 2015, Black Company issued a 8% callable bond which has a par value of $100,000 for $90,000. The bond is callable at 105 any time after January 1, 2020. The entire bond was called back on January 1, 2021 when the unamortized discount had a balance of $1,500. Calculate the amount of the gain or loss when the bond was retired on January 1, 2021.