PT Hebat Sekali currently has Rp 300 million of market value debt outstanding. The 9 percent coupon bonds (semi-annual pay) have a maturity of 15 years and arc currently priced at Rp 1.440,03 per bond (face value Rp 1.000,-). The firm also has an issue of 2 million preference shares outstanding with a market price of Rp 12,-. The preference shares offer an annual dividend of Rp 1,20,- PT Hebat Sekali also has 14 million ordinary shares outstanding with a price of Rp 20,- The firm is expected to pay Rp 2,20,- ordinary share dividend one year from today and that dividend is expected to increase by 5 percent per year forever. If PT Hebat Sekali has 40 percent marginal tax rate, what is the firm's weighted average cost of capital?