5. Class 2 students participate in the extracurricular activity group (each person is limited to one entry), sports class accounts for (1/3) of the whole class, music class accounts for (2/5), and the rest is art class. How many percent of the class are the students who apply for art class?
5.2班同学参加课外活动小组(每人限报一项)，体育类占全班人数的(1/3)，音乐类占全班人数的(2/5)，其余为美术类．报美术类的学生占全班人数的占几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>

<result>4/15 = around 0.266667</result>