A total of 86 people participated in the interest group activities in our school, including 25 people in the music group, 1.2 times as many people in the computer group as the music group, and the rest were in the painting group. How many people are in the painting group?
我校参加兴趣小组活动的共有86人，其中音乐小组有25人，微机小组的人数是音乐小组的1.2倍，其余的是绘画小组．绘画小组由多少人？
<gadget id="calculator">25 * 1.2</gadget>
<output>30</output>

<gadget id="calculator">25 + 30</gadget>
<output>55</output>

<gadget id="calculator">86 - 55</gadget>
<output>31</output>

<result>31</result>