There are 5 classes in the second grade of Yucai School, with a total of 210 students. Each class must select 8 students to participate in the rope skipping competition. How many students in the second grade did not participate in the rope skipping competition?
育才学校二年级有5个班，共有学生210人，每班要选8人参加跳绳比赛，二年级没有参加跳绳比赛的有多少人？
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">210 - 40</gadget>
<output>170</output>

<result>170</result>