The oil yield of a kind of rapeseed is 40%, how many kilograms of rapeseed are needed to extract 48 kg of rapeseed oil.
一种油菜籽的出油率是40%，要榨48千克菜籽油，需要多少千克菜籽．
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">48 / (2/5)</gadget>
<output>120</output>

<result>120</result>