please explain how it is done and not just answer . please show formula and then solve. i want to learn how to do default premiums. thank you

LO3 1. (Calculating the default-risk premium) At present, 10-year Treasury bonds are yielding 4% while a 10-year corporate bond is yielding 6.8%. If the liquidity-risk premium on the corporate bond is 0.4%, what is the corporate bond's default-risk premium? 2. (Calculating the maturity-risk premium) At present, the real risk-free rate of interest is 2%, while inflation is expected to be 2% for the next 2 years. If a 2-year Treasury note yields 4.5%, what is the maturity-risk premium for this 2-year Treasury