bottle of 800ml orange juice can fill 4 cups of the same size, how many such cups can just hold 2 liters of orange juice.
一瓶800毫升的橙汁可以倒满4个大小同样的杯子，多少个这样的杯子恰好可以装下2升的橙汁．
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">800 / 4</gadget>
<output>200</output>

<gadget id="calculator">2_000 / 200</gadget>
<output>10</output>

<result>10</result>