A certain class participates in a mathematics interest group. Boys who participate account for 1/5 of the class, girls who participate account for 2/7 of the class, more than 2 people, and those who do not participate account for 3/5 of the class, less than 5 people. How many people are there in the class? ．
某班参加数学兴趣小组，参加的男生占全班的1/5，参加的女生占全班的2/7多2人，不参加的占全班的3/5少5人，全班有多少人．
<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 5</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>