Each piece of iron weighs 250 kg, how many pieces of the same iron weigh 1 ton.
每块铁重250千克，多少块同样的铁重1吨．
<gadget id="calculator">1_000 / 250</gadget>
<output>4</output>

<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<result>4</result>