There are 25 people in the school singing interest group, 38 people in the dance group, and the number of people in the art group is three times the total number of people in the singing group and dance group. How many people are there in the art group?
学校唱歌兴趣小组有25人，舞蹈小组有38人，美术组的人数是唱歌组和舞蹈组总人数的3倍，美术组有多少人？
<gadget id="calculator">25 + 38</gadget>
<output>63</output>

<gadget id="calculator">63 * 3</gadget>
<output>189</output>

<result>189</result>