Oil: 200 kg/barrel, how many barrels is 1 ton.
石油：200千克/桶，多少桶是1吨．
<gadget id="calculator">1_000 / 200</gadget>
<output>5</output>

<gadget id="calculator">1 * 5</gadget>
<output>5</output>

<result>5</result>