Bagas plans to open a garment business. This business requires a sewing machine for IDR 300,000,000. If this business is runned, Bagas 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. Bagas will only run his business for five years and the machine after seven years is estimated to still be sold at a price of Rp. 100,000,000. use i = 10% a. Draw the cashflow diagram! b. Determine Net Present Value (NPV) c. Determine Payback Period!