If the average weight of each person is 50 kg, how many people should have such a weight in 1 ton.
如果平均每人体重50千克，那么1吨要有这样重的多少人．
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">1 * 20</gadget>
<output>20</output>

<result>20</result>