I have done this once but saids that all my answers are wrong. I need help.

Suppose your company needs to raise $45 million and you want to issue 30-year bonds for this purpose. Assume the required return on your bond issue will be 6 percent, and youre evaluating two issue alternatives: A 6 percent semiannual coupon bond and a zero coupon bond. Your companys tax rate is 35 percent.

a-1 How many of the coupon bonds would you need to issue to raise the $45 million?

a-2 How many of the zeroes would you need to issue? (Round your answer to 2 decimal places. (e.g., 32.16))

b-1 In 30 years, what will your companys repayment be if you issue the coupon bonds? (Enter your answer in dollars, not millions of dollars, i.e. 1,234,567.)

b-2 What if you issue the zeroes? (Enter your answer in dollars, not millions of dollars, i.e. 1,234,567.)

c Calculate the aftertax cash flows for the first year for each bond. (Enter your answer in dollars, not millions of dollars, i.e. 1,234,567.)

Coupon bonds Inflow/Outflow $
Zero coupon bonds Inflow/Outflow $

Please answer the entire question as this is one whole question from my homework please.