Pour a bottle of 1600ml of milk into a cup with a capacity of 400ml. How many such cups should be prepared?
将一瓶1600毫升的牛奶，全部倒入容量为400毫升的杯中，需准备多少个这样的杯子．
<gadget id="calculator">1_600 / 400</gadget>
<output>4</output>

<result>4</result>