The flour extraction rate of a kind of wheat is 70%, and the wheat husk and impurities are 180 kg. How many kilograms of flour are extracted from this batch of wheat?
一种小麦的出粉率是70%，麦皮与杂质为180千克，这批小麦出粉多少千克？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">180 / (3/10)</gadget>
<output>600</output>

<gadget id="calculator">600 * (7/10)</gadget>
<output>420</output>

<result>420</result>