Samson considering to replace the equipment. The cost on 1.1.2023 will be 3 Mil. The expected economic life of the equipment is 4 years. The company depreciates its equipment using the straight line methods. The company expects to sell this for 400000 after the useful life. There are expected cost savings arising from the investment of 1200000 in each year of 1 and 2 and 800000 in 3 and 4. Find the payback of this investment.