show all work and formulas please! no excel

CitaVecchia Corporation is evaluating to purchase of new equipment. The price of the equipment, including shipping and installation, is $166,000. The equipment is fully depreciated at the time of purchase. The equipment would be sold after three years for $74,600. The equipment requires a $6,250 increase in net operating working capital. The new equipment would not affect the revenue, but the pretax labor cost would decline by $85,200 per year. The company tax rate is 26 percent, and the WACC is 11.23 percent. What is the NPV of the project? What is the NPV of the project