In November, the cafeteria shipped 720 bags of rice, with an average of 9 bags eaten every day. How many bags of rice were eaten this month?
11月食堂运来720袋大米，平均每天吃掉9袋，这个月吃掉多少袋大米？
<gadget id="calculator">9 * 30</gadget>
<output>270</output>

<result>270</result>