Cori's Dog House is considering the installation of a new computerized pressure cooker for hot dogs. The cooker will increase sales by $7,400 per year and will cut annual operating costs by $12,200. The system will cost $50,700 to purchase and install. This system is expected to have a 7-year life and will be depreciated to zero using straight-line depreciation and have no salvage value. The tax rate is 21 percent and the required return is 12.3 percent. What is the NPV of purchasing the pressure cooker?