Use a tricycle to transport 720 bottles of shampoo, every 24 bottles are packed in a box, and 3 boxes are packed in a tricycle. How many tricycles are needed in total?
用三轮车运输洗发水720瓶，每24瓶装一箱，3箱装一辆三轮车，一共需要几辆三轮车？
<gadget id="calculator">24 * 3</gadget>
<output>72</output>

<gadget id="calculator">720 / 72</gadget>
<output>10</output>

<result>10</result>