A kind of soybean, 10kg can squeeze 2kg of oil. According to this calculation, how many tons of soybeans are needed to extract 50 tons of oil? (Solve with ratio)
一种大豆，10kg可榨2kg油．照这样计算，榨50吨油，需要多少吨这样的大豆？(用比例解)
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">50 / 5</gadget>
<output>10</output>

<result>10</result>