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Cori's Dog House is considering the installation of a new computerized pressure cooker for hot dogs. The cooker will increase sales by $$8,900$ per year and will cut annual operating costs by $$13,000.$ The system will cost $$45,300$ to purchase and install. This system is expected to have a $4-$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 $10\mathrm{.}5$ percent. What is the NPV of purchasing the pressure cooker?