solve it with excel please.

PROBLEM 3: A small company that manufactures vibration isolation platforms is trying to decide whether it should upgrade the current assembly system D, which is rather labor intensive, with the more highly automated system C three years from now. Some components of the current system can be sold now for $15,000, but they will be worthless hereafter. The operating cost of the existing system is $210,000 per year. System C will cost $400,000 with a $72,000 salvage value after six years, which is its useful life. Its operating cost will be $75,000 per year. If you are told to do a replacement analysis using an interest rate of 10% per year, which system do you recommend