A process for producing the mosquito repellant Deet has an initial investment of $220,000 with annual costs of $54,000. Income is expected to be $90,000 per year. What is the payback period at i=0% per year? At i=12% per year? (Note: Round your answers to the nearest integer.) The payback period at i=0% is determined to be years. The payback period at i=12% is determined to be years