Gesky Industrial Products manufactures brushless blowers for boilers, food service equipment, kilns, and fuel cells. The company borrowed $18,000,00018,000,000 for a plant expansion and repaid the loan in seven annual payments of $3,576,4203,576,420, with the first payment made 11 year after the company received the money. What was the interest rate on the loan? Use hand and spreadsheet solutions.