If 400kg of wheat is ground into flour, it is 320kg. What is the flour extraction rate of the wheat?
用400kg的小麦磨成面粉是320kg，小麦的出粉率是多少．
<gadget id="calculator">320 / 400</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>