400 tons of wheat can be ground to produce 340 tons of flour. What is the flour extraction rate of this wheat?
有400吨小麦可以磨出面粉340吨，这种小麦的出粉率是多少？
<gadget id="calculator">340 / 400</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(17/20) * 1</gadget>
<output>17/20 = around 0.85</output>

<result>17/20 = around 0.85</result>