An investor with a $3-$year investment horizon purchases a $20-$year $8\%$ coupon bond $($assume semi$-$annual payments$)$for $$828\mathrm{.}40.$ The yield to maturity is $10\%,$ reinvestment rate is expected to be $6\%$ annually. At the end of $3$ years, the bond is expected to offer a yield to maturity of $7\%.$ Calculate the total return of this investment