4 tons of peanuts are used to extract 1.6 tons of oil, what is the oil yield of peanuts?
用4吨花生榨油1.6吨，花生的出油率是多少．
<gadget id="calculator">1.6 / 4</gadget>
<output>0.4</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">0.4 * 1</gadget>
<output>0.4</output>

<result>0.4</result>