The school carried out interest group activities, and 94 people participated in the vocal music group, twice as many as the dance group. The wind group has 16 fewer people than the dance group. How many people are there in the wind group?
学校开展兴趣小组活动，参加声乐组的有94人，是参加舞蹈组人数的2倍．管乐组的人数比舞蹈组的人数还少16人，管乐组有多少人？
<gadget id="calculator">94 / 2</gadget>
<output>47</output>

<gadget id="calculator">47 - 16</gadget>
<output>31</output>

<result>31</result>