If 500 kg of peanuts are used to extract 200 kg of peanut oil, what is the yield of peanut oil?
用500千克花生榨出花生油200千克，花生的出油率是多少．
<gadget id="calculator">200 / 500</gadget>
<output>2/5 = around 0.4</output>

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

<gadget id="calculator">(2/5) * 1</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>