a$)$

A bond has $15$ years left to maturity. The annual coupon rate is $9\%,$ and face value is $$1,000.$ If the YTM $=12\%,$ what is the bond price?

b$)$ An annual coupon bond has coupon payment $=$ $$500,$ YTM $=8\%,$ and maturity $=5$ years. If the price ofthe bond is $$9,400,$ what must be the face value?

c$)$A bond has $15$ years left to maturity. The semi$-$annual coupon rate is $9\%,$ and face value is $$1,000.$ If the YTM $=12\%,$ what is the bond price?

for all $3$ parts please show all calculations via excel, and how you got them in excel $($formulas$).$ thanks.