There are 210 students in the fifth grade of Hongxing Primary School. The number of students in the sixth grade is that of the fifth grade (6/7). How many students are there in the sixth grade?
红星小学五年级有学生210人．六年级的学生人数是五年级的(6/7)，六年级有学生多少人？
<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">210 * (6/7)</gadget>
<output>180</output>

<result>180</result>