Please explain how to use a financial calculator to solve for the coupon rate (what values to input where)

You find the following Treasury bond quotes. To calculate the number of years until maturity, assume that it is currently May 2016. The bonds have a par value of $1,000. Maturity Mo/Yr Ask Chg +.3119 Rate Bid Asked Yld ?? May 21 May 26 May 36 103.5566 104.5056 103.6448 2.489 5.624 104.6513 +4389 ?? 6.203 ?? ?? +.5509 4.191 In the above table, find the Treasury bond that matures in May 2021. What is the coupon rate for this bond? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g. 32.16.) Coupon rate