It is known that Hongda Company plans to purchase a equipment with its own funds in early 2006, and it needs a one-time investment of RMB 1 million. By the measure. The service life of the equipment is 5 years, and the tax law also allows depreciation according to 5 years; After the equipment is put into operation, it can increase the profit of 200,000 yuan per year. Assuming that the equipment is depreciated by the straight-line method, the estimated net salvage value rate is 5%; Known,

(P/ A,10%, 5) =3.7908, (P/F,10%, 5) =0.6209. Construction and installation period and corporate income tax are not considered.

Requirements :(1) Calculate the net cash flow of each year during the service period.

(2) Calculate the static payback period of the equipment.

(3) If 10% is taken as the discount rate, the net present value is calculated.