In Class 1 of the third grade, the number of people participating in the mathematics interest group accounted for (1/5) of the whole class, and the number of people participating in the science and technology group accounted for (2/5) of the whole class. How much more?
在三年级1班里，参加数学兴趣小组的人数占全班的(1/5)，参加科技小组的人数占全班的(2/5)，参加科技小组的人数比参加数学兴趣小组的人数多几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) - (1/5)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>