There are 80 girls in the fifth grade, accounting for (2/5) of the whole grade. How many students are there in fifth grade?
五年级有女生80人，占全年级人数的(2/5)．五年级共有学生多少人？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">80 / (2/5)</gadget>
<output>200</output>

<result>200</result>