Xiao Ming has 360 stamps, he puts every 20 stamps in a group, and puts every 2 groups in a box, how many boxes can be packed in this way?
小明有360张邮票，他每20张放一组，每2组放在一个盒子里，这样能装几盒？
<gadget id="calculator">360 / 20 / 2</gadget>
<output>9</output>

<result>9</result>