A certain class of students participates in a mathematics interest group. Among them, the number of boys participating is 20% of the total number of the class, the number of girls participating is 2/7 of the total number of the class, and the number of non-participants is more than (3/5) of the total number of the class. ) less than 5 people, how many people are there in the class?
某班学生参加数学兴趣小组，其中，参加的男生是全班人数的20%，参加的女生是全班人数的(2/7)多2人，不参加的人数比全班人数的(3/5)少5人，全班有多少人？
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

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

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) - 1</gadget>
<output>-2/5 = around -0.4</output>

<gadget id="calculator">(1/5) + (2/7) + (-2/5)</gadget>
<output>3/35 = around 0.085714</output>

<gadget id="calculator">3 / (3/35)</gadget>
<output>35</output>

<result>35</result>