On January 1, 2015, Company P sold a machine to its 70%-owned subsidiary, Company S, for $60,000. The book value of the machine was $50,000. The machine was depreciated using the straight-line method over five years. On December 31, 2017, Company S sold the machine to a nonaffiliated firm for $35,000. On the consolidated statements, how much gain or loss on the intercompany machine sale should be recognized in 2015, 2016, and 2017?