A worker processes a batch of parts and makes 25 parts in 10 minutes. How many minutes does it take on average to make one part?
工人加工一批零件，10分钟做了25个，平均每做1个零件需要多少分钟．
<gadget id="calculator">10 / 25</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>