Calculate the value of the following STRIPS.

a$.100,000$ principal, payable in $5$ years, $6\mathrm{.}680\%$ yield to maturity.

b$.8000$ coupon payment, payable in $5\mathrm{.}5$ years, $5\mathrm{.}088\%$ yield to maturity

c$.20,000$ coupon payment, payable in $7\mathrm{.}5$ years, $4\mathrm{.}864\%$ yield to maturity$|$

calculate the yield to maturity of the following STRIPS

d$.100,000$ face value, $84,660$ asking price, payable in $12$ years

e$.5000$ face value, $3880$ asking price, payable in $5$ years.