I need assistance with this question. What is the yield to call of a 20-year to maturity bond that pays a coupon rate of 10.

 I need assistance with this question.

What is the yield to call of a 20-year to maturity bond that pays a coupon rate of 10.28 percent per year, has a $1,000 par value, and is currently priced at $1,344? The bond can be called back in 6 years at a call price $1,093. Assume annual coupon payments. Please assist.