are the below correct

6. Calculating Cost of Debt. ICU Window, Inc., is trying to determine its cost of debt. The firm has a debt issue outstanding with seven years to maturity that is quoted at 108 percent of face value. The issue makes semiannual payments and has an embedded cost of 6.1 percent annually. What is ICU's pretax cost of debt? If the tax rate is 38 percent, what is the after tax cost of debt?

Suppose face value of debt1000

Market value of debtM.V.1080

Interest half yearlyI30.50

Cost of Debt Annual - PretaxKd (pretax)4.74%

Cost of Debt Annual - After taxKd (1-t) 2.94%

Market value of debt-1080

1Installment30.5

2Installment30.5

3Installment30.5

4Installment30.5

5Installment30.5

6Installment30.5

7Installment30.5

8Installment30.5

9Installment30.5

10Installment30.5

11Installment30.5

12Installment30.5

13Installment30.5

14Installment1030.5

IRR semiannually2.372%

IRR annually4.74%