2 kilograms (1/3) is 1 kilogram, which is 10 kilograms ((())/(())).
2千克的(1/3)是1千克的多少，是10千克的((())/(()))．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 * (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>