There are 2 students playing badminton in a group, each group plays 40 times per minute, how many times can 22 groups play in 1 minute.
打羽毛球的同学每2人1组，每组每分钟打40次，22组1分钟能打多少次．
<gadget id="calculator">40 * 22</gadget>
<output>880</output>

<result>880</result>