A firm has 10,000,000 shares of common stock outstanding at a market price of IDR 3,000 a share. The firm's common stock just paid IDR 250 annual dividend and has a dividend growth rate of 4.00 percent. There are 1,000,000 shares of 5 percent preferred stock outstanding at a market price of IDR 7,000 a share. The preferred stock has a par value of IDR 10,000. The firm also has outstanding bonds mature in 20 years, with a total face value of IDR 80,000,000,000, a face value per bond of IDR 10,000, and a market price of IDR 10,200 each. The bonds pay 11 percent interest p.a. paid semi-annually. The tax rate is 25 percent. Calculate the firm's WACC