please I need the full answer

Below is a list of prices for $1,000-par zero-coupon Treasury securities of various maturities. A 8% coupon $100 par bond pays a semi-annual coupon and will mature in 1.5 years. What should be the YTM on the bond? Assume semi-annual interest compounding for this question. Enter your answer in decimal form, rounded to 4 decimals. Thus, if your answer is 0.12345678 , just enter 0.1235