Erica's Exotics and Aquatics Shoppe is considering investing $540,000 in a project. The project is expected to generate a cash inflow of $90,000 in the first year, $180,000 in the second year, $540,000 in the third year, $450,000 in the fourth year, and $0 in subsequent years. Calculate the project's payback period in years. Round your answer to two decimal places in years. For example, if the payback period is 1 year and 6 months (1.5 years), enter "1.50". If the payback period is 2 years and 3 months (2.25 years), enter 2.25". If the payback period is 3 years and 4 months (3.3333 years), enter 3.33 Type your answer.....