The computer group has 18 people, and the art group has three times as many people as the computer group. How many people are there in the art group?
电脑小组有18人，美术组人数是电脑组3倍，美术组有多少人？
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<result>54</result>