3 tons of peanuts can extract 1200 kg of oil, what is the oil yield of peanuts?
3吨花生可榨油1200千克，花生的出油率是多少．
<gadget id="calculator">3 * 1_000</gadget>
<output>3_000</output>

<gadget id="calculator">1_200 / 3_000</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>