One of X Company's production machines was badly damaged recently. Unfortunately, the machine was purchased just two years earlier for $45,000. The company must either repair the machine or purchase a new machine. The estimated cost of repairing the machine is $21,000, after which operating costs will be $63,000 a year. It will also require a maintenance check in the second year that is estimated to cost $2,500. A new machine will cost $81,000, but it will be more efficient than the repaired machine, with annual operating cost savings of $8,000. Both the repaired machine and the new machine will last for six years, at which time the repaired one would be worthless, and new one would be worth $6,500. If it is not repaired, the damaged machine can be sold immediately for $4,000. Assuming a discount rate of 6%, what is the net present value of buying the new machine instead of repairing the damaged machine? (Use the present value tables in the Coursepack.)