If 5.4 kg of peanuts can be used to extract 1.2 kg of oil, how many kg of peanuts are needed to extract 1 kg of oil?
用5.4千克花生能榨油1.2千克，榨1千克油需要花生多少千克．
<gadget id="calculator">5.4 / 1.2</gadget>
<output>4.5</output>

<result>4.5</result>