A $1,000 seven-year 6% bond with semiannual coupons is redeemable for $1,065. It was originally purchased at issue for $970. It is sold after 45 months for $995. Find the accrued interest by the practical method and again by the theoretical method using the new yield to maturity.

Answer should be A_T=$14.84, practical is $15

Please show work thanks!