Use soybeans to extract oil, and the oil yield rate is 25%. To extract 35 kilograms of soybean oil, how many kilograms of soybeans are needed?
用大豆榨油，出油率为25%，要榨35千克豆油，需要大豆多少千克？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">35 / (1/4)</gadget>
<output>140</output>

<result>140</result>