9. 8.9 ABB purchased fieldbus communication equipment for a project in South Africa for $3.15 million. If net cash flow is estimated at $500,000 per year, and a salvage value of $400,000 is anticipated, determine how many years the equipment must be used just to break even at interest rates ranging from 8% to 15% per year. Solve using

(a) tabulated factors, and

(b) a spreadsheet.