Each kilogram of peanut kernels contains about (2/5) kilograms of oil, how many kilograms of oil is contained in 1 ton of peanut kernels.
每千克花生仁约含油(2/5)千克，1吨花生仁含油多少千克．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) * 1 * 1_000</gadget>
<output>400</output>

<result>400</result>