Filer Manufacturing has 7,146,781 shares of common stock outstanding. The current share price is $77.4, and the book value per share is $6.56. Filer Manufacturing also has two bond issues outstanding. The first bond issue has a face value of $42,212,858, has a 0.05 coupon, matures in 10 years and sells for 83 percent of par. The second issue has a face value of $65,742,234, has a 0.06 coupon, matures in 20 years, and sells for 92 percent of par. The most recent dividend was $2.13 and the dividend growth rate is 0.06 . Assume that the overall cost of debt is the weighted average of that implied by the two outstanding debt issues. Both bonds make semiannual payments. The tax rate is 0.4 . What is Filer's aftertax cost of debt? Enter the answer with 4 decimals (e.g. 0.2345)