The oil yield of a kind of peanut is 40%, how many kilograms of this kind of peanut are needed to squeeze out 200 kilograms of peanut oil?
一种花生的出油率是40%，要榨出200千克的花生油，需要这种花生多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 / (2/5)</gadget>
<output>500</output>

<result>500</result>