There are 30 track and field teams in a certain school. The dance team has 80% of the track and field team. The ratio of the dance team to the chorus team is 3:10. How many people are there in the chorus team?
某校田径队有30人，舞蹈队的人数是田径队的80%，舞蹈队的人数与合唱队人数的比是3：10，合唱队有多少人？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">30 * (4/5)</gadget>
<output>24</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">24 / (3/10)</gadget>
<output>80</output>

<result>80</result>