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 6.75 05/15/2020 7.80 05/15/2020 8.30 108.87500 108.93750 - .31250 3.580 109.40625 109.46875 -09375 4.400 114.46875 114.65625 -.46875 3.140 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