The students participated in voluntary labor, and 48 students went to the fifth grade, 20% less than the sixth grade. How many people went to the sixth grade?
同学们参加义务劳动，五年级去了48人，比六年级去的人数少20%．六年级去了多少人？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">48 / (4/5)</gadget>
<output>60</output>

<result>60</result>