Master Li processed a batch of parts. He originally planned to process 50 parts per day and completed them in 30 days. He actually processed 60 parts per day. How many days did he complete the task?
李师傅加工一批零件，原计划每天加工50个，30天完成，实际每天加工60个，实际几天就完成了任务？
<gadget id="calculator">30 / 60</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">50 * (1/2)</gadget>
<output>25</output>

<result>25</result>