Xiao Ming can process 5 parts in 4 minutes, how many minutes does it take to process one part on average.
小明4分钟可以加工5个零件，平均每加工一个零件要多少分钟．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>