How to get the finance question answers? Thank You!

Problem 8.1? Sheridan, Inc... has a bond issue maturing in seven years that is paying a coupon rate of 15 percent (semiannual payments). Management wants to retire a portion of the issue by buying the securities in the open market. If it can renance at 6.0 percent, how much will Sheridan pay to bu'f back its current outstanding bonds? (Round answer to 2 decimal places, my. 15.25.) Sheridan will pay $