On April $30,$ one year before maturity, Peter Company retired $$1,500,000$ of its $9\%$ bonds payable at the current market price of $101(101\%$ of the bond face amount, or $$1,500,0001\mathrm{.}01=$$$1,515,000).$ The bond book value on April $30$ is $$1,474,500,$ reflecting an unamortized discount of $$25,500.$ Bond interest is currently fully paid and recorded up to the date of retirement. What is the gain or loss on retirement of these bonds? Is this gain or loss a real economic gain or loss?

Note: Do not use a negative sign.

The $$ on the retirement of these bonds is $ $$

The resulting gains or losses $$ real economic gains and losses.