On December 31, 2018, the $4,000,000, 12% bonds of Nelson Co had a carrying value of $4,160,000. The bonds had been issued to yield 10%. Nelson uses the effective-interest method of amortization. Interest is paid on June 30 and December 31. On July 1, 2019, several years before their maturity, Nelson retired the bonds at 104. The loss on retirement (ignoring taxes) is what?