help with these two questions please!!!

$1.$ ABC has $2\mathrm{.}88$ percent coupon bonds on the market with $1$ year left to maturity. If the $$1000$ face value bonds make semiannual payments and are currently priced at $$986,$ what is their YTM in percent? Answer to two decimals

$2.$ Firm Z issued $14$ year, semiannual$-$pay, $$1000$ par bonds $3$ years ago at a coupon rate of $4\mathrm{.}64$ percent. If the YTM on these bonds is $3\mathrm{.}98$ percent, what is the current bond price?Answer to two decimals