Take 500 grams of wheat, and after drying, there are still 428 grams. What is the moisture content of this wheat?
取小麦500克，烘干后，还有428克，这种小麦的含水率多少．
<gadget id="calculator">500 - 428</gadget>
<output>72</output>

<gadget id="calculator">72 / 500</gadget>
<output>18/125 = around 0.144</output>

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

<gadget id="calculator">(18/125) * 1</gadget>
<output>18/125 = around 0.144</output>

<result>18/125 = around 0.144</result>