There are 144 apples available, each with 2 packs and 4 packs with a box. How many boxes of these apples can be filled?
现有苹果144个，每2个包一包，每4包装一盒．这些苹果可以装多少盒？
<gadget id="calculator">144 / 2 / 4</gadget>
<output>18</output>

<result>18</result>