How many cups can you pour 1 liter of water into a 250ml measuring cup?
把1升水倒入250毫升的量杯，可以倒多少杯．
<gadget id="calculator">1_000 / 250</gadget>
<output>4</output>

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

<result>4</result>