The oil yield of soybeans is 40%, how many kilograms of oil can be produced from 250 kg of soybeans.
大豆的出油率是40%，250千克大豆可出油多少千克．
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">250 * (2/5)</gadget>
<output>100</output>

<result>100</result>