A bottle of 1 liter of juice, after drinking 200 ml, pour the rest into a cup with a capacity of 160 ml, how many cups can be poured.
一瓶1升的果汁，喝掉200毫升后，剩下的倒入容量是160毫升的杯子中，还能倒多少杯．
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 - 200</gadget>
<output>800</output>

<gadget id="calculator">800 / 160</gadget>
<output>5</output>

<result>5</result>