XYZ Inc issued $20010-$ year bonds with face value of $$1,000$ paying semi$-$annually on January $2,2021.$ The coupon rate on these bonds is $1\%$ and Yield$-$to$-$Maturity of these bonds is $2\%.$

As a result, the company received $$909\mathrm{.}77$ per bond at the time of issue and sale.

Q$1)$ What is the interest payment in $2021?$

Q$2)$ What is the interest expense in $2021?$

Q$3)$ What is the book value of the bonds on December $31,2021?$