Today's physical education class time is arranged like this, of which (1/8) is used for warm-up activities, (1/2) is training time, and the rest is game time. If a class is 40 minutes, then the time for students to play games accounts for What fraction of this class time?
今天体育课时间是这样安排的，其中(1/8)用作准备活动时间，(1/2)是训练时间，其余是游戏时间，如果一节课是40分钟，那么同学做游戏的时间占这一节课时间的几分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

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

<gadget id="calculator">1 - (1/8) - (1/2)</gadget>
<output>3/8 = around 0.375</output>

<result>3/8 = around 0.375</result>