The school calligraphy interest group has 24 male students and 19 female students. The number of people in the art interest group is three times that of the calligraphy interest group. How many people are there in the art interest group?
学校书法兴趣小组有男同学24人，女同学19人．美术兴趣小组的人数是书法兴趣小组的3倍，美术兴趣小组有多少人？
<gadget id="calculator">24 + 19</gadget>
<output>43</output>

<gadget id="calculator">43 * 3</gadget>
<output>129</output>

<result>129</result>