Sheffield Company has a factory machine with a book value of $160,000 and a remaining useful life of 6 years. A new machine is available at a cost of $248,500. This machine will have a 6-year useful life with no salvage value. The new machine will lower annual variable manufacturing costs from $596,500 to $495,000. Prepare an analysis that shows whether Sheffield should retain or replace the old machine. (If an amount reduces the net income then enter with a negative sign preceding the number or parenthesis, e.g. 15,000,(15,000). The old factory machine should be