PQR Co. has semiannual-pay 6.38 percent coupon bonds with a YTM of 5.51 percent. The current yield on these bonds is 5.96 percent. How many years do these bonds have left until they mature? Can you show step to step how to solve this question? Thanks in advance

Question 5 1 pts PQR Co. has semiannual-pay 6.38 percent coupon bonds with a YTM of 5.51 percent. The current yield on these bonds is 5.96 percent. How many years do these bonds have left until they mature? Answer to two decimals, carry intermediate calcs. to four decimals.