Keys Printing plans to issue a $1,000 par value, 15-year noncallable bond with a 7.40% annual coupon, paid semiannually. The company's marginal tax rate is 40.00%, but Congress is considering a change in the corporate tax rate to 25.00%. By how much would the component cost of debt used to calculate the WACC change if the new tax rate was adopted? Do not round your intermediate calculations.