The school divides students into groups to carry out extracurricular activities. 5 people in each group, 2 people more; 6 people in each group, 5 people less; 7 people in each group, 2 people less. At least how many students participate in extracurricular activities?
学校将学生分组开展课外活动．每组5人，多2人；每组6人，少5人；每组7人，少2人．参加课外活动的学生至少有多少人？
<gadget id="calculator">37 * 5</gadget>
<output>185</output>

<gadget id="calculator">185 + 2</gadget>
<output>187</output>

<result>187</result>