40 parts can be processed in 8 minutes. At this speed, how many minutes does it take to process one part.
8分钟能加工40个零件，照这样的速度，加工一个零件需要多少分钟．
<gadget id="calculator">8 / 40</gadget>
<output>1/5 = around 0.2</output>

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