The ratio of the number of boys to girls in class 2 is 7:5. It is known that there are 6 fewer girls than boys. How many students are there in the class?
六2班男、女生人数的比是7：5，已知女生比男生少6人，全班有学生多少人？
<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">7 + 5</gadget>
<output>12</output>

<gadget id="calculator">3 * 12</gadget>
<output>36</output>

<result>36</result>