The annual sales income of the enterprise using the existing equipment is 30 million, and the annual cash cost is 22 million. The company now plans to update its equipment. The purchase price of the new equipment is 4.25 million, which can increase sales revenue by 8 million per year, increase cash cost by 6 million, the service life of the equipment is 8 years, and the ending residual value is 250,000. The realizable value of the old equipment is 800,000, and it can be used for 8 years, the annual depreciation is 150,000, and the ending salvage value is 50,000. Assuming that all tax rates are required to be 40%: please to evaluate the feasibility of the enterprise's renewal and transformation plan.