720 batteries, every 9 pieces are packed in a box, and 5 boxes are packed in a box. How many boxes can be packed in total?
720节电池，每9节装一盒，5盒装一箱．一共可以装多少箱？
<gadget id="calculator">720 / 9 / 5</gadget>
<output>16</output>

<result>16</result>