i need to know how to do this by hand. which formula do i use? how do i get to the answer?

2) 10 Points Sweet Pie Foods has bonds outstanding with a coupon rate of 5.17%, paid semi-annually, o sell for $1,063.84. The bonds have a face value of $1,000 and 17 years to maturity. What is the current yield for these bonds? Coupons Current Price (PU) Yield