At one point, certain U.S. Treasury bonds were callable. Consider the prices in the following three Treasury issues as of May 15, 2017: 05/15/2020 6.05 108.43750 108.50000 - 31250 3.060 05/15/2020 710 108.96875 109.03125 -09375 3.880 05/15/2020 8.05 114.03125 114.21875 - 46875 3.050 The bond in the middle is callable in February 2018. What is the implied value of the call feature? Assume a par value of $1,000. (Hint: Is there a way to combine the two noncallable issues to create an issue that has the same coupon as the callable bond?) (Do not round Intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Call value