A science class is 40 minutes, of which the teacher’s lecture time accounts for (1/3), the students’ experiment operation time accounts for (1/2), and the rest of the time is for homework, what percentage of the time for homework?
一节科学课40分钟，其中老师讲课时间了占(1/3)，学生实验操作时间占了(1/2)，其余时间做作业，做作业的时间占几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/3) - (1/2)</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>