Ying Import has several bond issues outstanding, each making semiannual interest payments. The bonds are listed in the following table. If the corporate tax rate is 32 percent, what is the aftertax cost of Ying's debt?

Bond	Coupon Rate	Price Quote	Maturity	Face Value
1	5.7%	101	4 years	$ 25,000,000
2	6.4	109	7 years	41,000,000
3	5.8	103	21 years	41,000,000
4	7.2	113	33 years	64,000,000