Amys Company purchases a factory machine for $900,000 on August 5, 2017. Amys Company does not elect IRC Section 179 or Bonus Depreciation and this is the only asset purchased during 2017. Assume that the factory machine has a 7-YR MACRS life. Calculate the taxable gain or loss on sale for Amys Company if the business machine is sold for $400,000 on December 31, 2020. Please be sure to show your work to be eligible for partial credit.