The Farm Company is considering investing in solar panels to generate enough power to run its irrigation system. The local utility company has agreed to purchase any unused power generated by the Farm Company's new solar panels. Between the new source of revenue and the cost savings provided by the solar panels, the company expects to generate \($225,000\) per year in net after-tax cash inflows. The solar panels will cost \($1,750,000\) to purchase and install and have an expected useful life of 15 years with no residual value. Calculate the cash payback period.