40% singing, 30% skits, 20% dancing, and 5% others. There are 60 people in the class. Due to time constraints, each person only participates in one performance. How many dancers are there?
唱歌40%，小品30%，舞蹈20%，其他5%，全班有60人，由于时间限制，每人只参加一次表演，表演舞蹈的有多少人？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 * (1/5)</gadget>
<output>12</output>

<result>12</result>