Class 61 of the Experimental Primary School originally arranged for 20% of the students to participate in the "June 1st" singing competition held by the school. Later, 2 people were temporarily added, so that the number of people actually participating in the singing competition in this class was 1/3 of the remaining students. How many people in the class actually went to the singing competition?
实验小学六1班原来安排20%的学生去参加学校举行的"六一"歌唱比赛，后来临时增加了2人，这样该班实际参加歌唱比赛的人数是余下人数的(1/3)，该班实际去参加歌唱比赛的有多少人？
<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">2 / (1/20)</gadget>
<output>40</output>

<gadget id="calculator">40 * (1/5)</gadget>
<output>8</output>

<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<result>10</result>