Andrew plans to open a garment business. This business requires a sewing machine for IDR 300,000,000. If this business is run, Andrew will get a net profit (already taking into account other costs such as room rent, employee salaries, maintenance etc.) of IDR 80,000,000 per year. Andrew will only run his business for five years and the machine after seven years is estimated to still be sold at a price of IDR 100,000,000. use i = 10% How to do the calculation of Rate of Return (RoR) in Excel? I need to do a graph for all sort of i values. RoR is i at Net Present Value (NPV) = 0 (can be seen from graph). Show me how to do the excel.