In Class 57, the number of people who reached the physical education standard last semester was 2 times more than the number of people who did not meet the standard. This year, two students reached the standard. In this way, the number of people who reached the standard was exactly 7 times the number of people who did not meet the standard. How many students are there in this class?
五七班上学期体育达标的人数比未达标人数的5倍多2人，今年又有2位同学达标，这样，达标的人数正好是未达标人数的7倍．这个班共有多少个同学？
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">14 + 2 + 2</gadget>
<output>18</output>

<gadget id="calculator">7 - 5</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

<gadget id="calculator">5 * 9</gadget>
<output>45</output>

<gadget id="calculator">45 + 2 + 9</gadget>
<output>56</output>

<result>56</result>