A robot that can be purchased for $8065 is estimated to reduce production costs annually be $2020. The machine will operate for 5 vears, at which time it will have no resale value. What rate of return will be earned on the investment? (i.e., At what interest rate will a cash flow of $2020 per year for 5 years equal a present value of $8065?) Enter your answer as a number without the percent sign %. A- S2020 Years