Bramble Company has a factory machine with a book value of $94,300 and a remaining useful life of 8 years. It can be sold for $28,500. A new machine is available at a cost of $327,000. This machine will have a 8-year useful life with no salvage value. The new machine will lower annual variable manufacturing costs from $551,200 to $504,800.Should the old machine should be retained or replaced? Show calculations.