An oil mill can extract 75 kg of soybean oil from 500 kg of soybeans. Now it needs to extract 120 tons of soybean oil. How many tons of soybeans are needed? (Solve with ratio)
一个榨油厂用500千克黄豆可榨豆油75千克，现在要榨豆油120吨，需要黄豆多少吨？(用比例解)
<gadget id="calculator">75 / 500</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">120 / (3/20)</gadget>
<output>800</output>

<result>800</result>