80 kg of oil can be extracted from 200 kg of soybeans. According to this calculation, how many tons of oil can be extracted from 50 tons of soybeans.
用200千克黄豆可榨油80千克，照这样计算，50吨黄豆可榨油多少吨．
<gadget id="calculator">80 / 200</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 50</gadget>
<output>20</output>

<result>20</result>