Master Wang of a certain factory needs to process 7,200 parts, 72 parts per hour, and 5 hours a day. How many days will it take to complete?
某厂王师傅要加工7200个零件，每小时加工72个，每天工作5小时，需要几天完成？
<gadget id="calculator">72 * 5</gadget>
<output>360</output>

<gadget id="calculator">7_200 / 360</gadget>
<output>20</output>

<result>20</result>