The number of the school science interest group is (3/5) of the sports interest group, and the number of the literature and art interest group is (2/5) of the sports interest group. Then, the number of the literature and art interest group is the number of the science interest group.
学校科学兴趣小组的人数是体育兴趣小组的(3/5)，文艺兴趣小组的人数是体育兴趣小组的(2/5)，那么，文艺兴趣小组的人数是科学兴趣小组的多少．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/5) / (3/5)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>