There are 209 students in the fifth grade of Guangming Primary School, which is more than the number of students in the sixth grade (2/9). How many students are there in the sixth grade?
光明小学五年级有学生209人，比六年级学生人数多(2/9)，六年级有学生多少人？
<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">1 + (2/9)</gadget>
<output>11/9 = around 1.222222</output>

<gadget id="calculator">209 / (11/9)</gadget>
<output>171</output>

<result>171</result>