There are 720 glasses, if every 6 pieces are packed in a box, and every 3 boxes are packed in a box, how many boxes can be packed in total?
有720只玻璃杯，如果每6只装一盒，每3盒装一箱，一共可以装多少箱？
<gadget id="calculator">6 * 3</gadget>
<output>18</output>

<gadget id="calculator">720 / 18</gadget>
<output>40</output>

<result>40</result>