Dongfang Primary School carries out extracurricular interest group activities. The ratio of the number of people participating in the dance team to the number of people participating in the music team is 7:11. If 5 people are transferred from the dance team to the music team, the ratio of the number of the two teams is 1:2. How many people are there in the dance team? people?
东方小学开展课外兴趣小组活动，参加舞蹈队人数与参加音乐队人数的比是7：11，如果从舞蹈队调5人到音乐队，那么两队人数的比是1：2，舞蹈队有多少人？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 5</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">5 + (5/2)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">(1/2) * 11</gadget>
<output>11/2 = around 5.5</output>

<gadget id="calculator">7 - (11/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(15/2) / (3/2)</gadget>
<output>5</output>

<gadget id="calculator">5 * 7</gadget>
<output>35</output>

<result>35</result>