In the sixth grade, 48 people participated in science and technology activities, 20% less than those who participated in mathematics activities. How many people participate in math interest activities?
六年级参加科技活动的人数有48人，比参加数学活动的人数少20%．参加数学兴趣活动的有多少人？
<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>