FuturaTech Corp. is contemplating a significant expansion into the renewable energy sector. The initial investment for research and development (R&D) is estimated to be $2,000,000. The R&D process will span two years, with $1,200,000 allocated in the first year and $800,000 in the second. Following R&D, FuturaTech Corp. expects annual revenue of $3,500,000 from the sale of renewable energy products. Determine the payback period for this R&D investment.