Wilson Corp. is considering the purchase of a new piece of equipment. The cost savings from the equipment would result in an annual increase in net income after tax of $50,000. The equipment will have an initial cost of $600,000 and have an 8-year life. The salvage value of the equipment is estimated to be $100,000. If the hurdle rate is 10%, what is the approximate net present value? (Future Value of $1. Present Value of $1. Future Value Annuity of $1. Present Value Annuity of $1.) (Use appropriate factor from the PV tables. Round your final answer to the nearest dollar amount.)