(1/5) ton = how many kilograms.
(1/5)吨=多少千克．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 1_000</gadget>
<output>200</output>

<result>200</result>