40 kg of oil can be extracted from 200 kg of rapeseed, what is the oil yield of this type of rapeseed?
用200千克油菜籽可榨40千克油，这种油菜籽的出油率是多少．
<gadget id="calculator">40 / 200</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>