A healthcare company plans to invest Rs. 900 lakhs in new equipment. The expected earnings (before depreciation and taxes) are Rs. 300 lakhs, 320 lakhs, 340 lakhs, 360 lakhs, and 380 lakhs for the next five years. Depreciation is calculated at 18% on a Written Down Value basis. The scrap value at the end of five years is estimated at 25%. The cost of capital is 10%, and the income tax rate is 22%. Calculate the NPV, IRR, payback period, profitability index, and internal rate of return.