An agricultural machinery factory produces a batch of parts. The plan is 120 per day, 25 days to complete, the actual production is 150 per day, how many days to complete the task? (Solve with ratio)
某农机厂生产一批零件．计划每天120个，25天完成，实际每天生产150个，实际多少天完成任务？(用比例解)
<gadget id="calculator">120 * 25</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 / 150</gadget>
<output>20</output>

<result>20</result>