Suppose that LIBOR rates for the maturities of 1,2,3,4,5 and 6 months are 2.6%, 2.9%, 3.1%, 3.2%, 3.25%, and 3.3% with continuous compounding. What are forward rates for future 1-month periods?

Consider an 8 month European put option on a treasury bond that currently has 14.25 years to maturity. The current cash bond price is $910, the exercise price is $900, and the volatility for the bond price is 10% per annum. A coupon of $35 will be paid by the bond in 3 months. The risk-free interest rate is 8% for all maturities up to 1 year. Use Blacks model to determine the price of the option. Consider both the case where the strike price corresponds to the cash price of the bond and the case where it corresponds to the quoted price.

I need the EXCEL explanation. I know how to calculate the answer, but I don't know how to calculate in Excel. Please Help.