Davi currently has $$10,000$ saved for a new car that she plans to buy for $$40,000$ in $3$ years. She believes she can earn an annual return of $6\mathrm{.}36$ percent. How much does Davi need to save each month for $3$ years to have exactly enough in $3$ years to pay for her car if she makes her next savings contribution later today? Vigdis owns one bond A and one bond B$.$ The total value of these two bonds is $$2,100.$ Bond A pays semi$-$annual coupons, matures in $6$ years, has a face value of $$1000,$ and pays its next coupon in $6$ months. Bond B pays annual coupons, matures in $17$ years, has a face value of $$1000,$ has a yield$-$to$-$maturity of $7\mathrm{.}00$ percent, and pays its next coupon in one year. Both bonds have a coupon rate of $7\mathrm{.}60$ percent. What is the yield$-$to$-$maturity for bond A$?$ Answer in decimal format, rounded to the nearest hundredth of a percent $($for example, $1\mathrm{.}23\%$ would be entered as $0\mathrm{.}0123).$