Pour 4 liters of water into a 500ml measuring cup, how many cups can be poured?
把4升的水倒入500毫升的量杯，可以倒多少杯．
<gadget id="calculator">4 * 1_000</gadget>
<output>4_000</output>

<gadget id="calculator">4_000 / 500</gadget>
<output>8</output>

<result>8</result>