please solve it as fast as you can

A company has developed a new product and has to decide whether to start full production. The marketing department has estimated that the product could sell at a price of Rs 500 per unit and achieve sales of 5000 unit per annum. Variable costs are Rs. 280 per unit and fixed costs Rs. 4,00,000 per annum. The initial investment in the production plant would be Rs. 20,00,000 with a residual value of Rs. 3,00,000 after 5 years when the product would probably be replaced. Should full production be started for a discount rate of 10%? Also, find the Internal Rate of Return (IRR)