The washing machine factory originally planned to produce 2,160 washing machines, which took 30 days to complete, but actually produced 18 more machines per day than the original plan. How many days did it take to complete?
洗衣机厂原计划生产洗衣机2160台，30天完成，实际每天比原计划多生产18台，实际多少天完成？
<gadget id="calculator">2_160 / 30</gadget>
<output>72</output>

<gadget id="calculator">72 + 18</gadget>
<output>90</output>

<gadget id="calculator">2_160 / 90</gadget>
<output>24</output>

<result>24</result>