A factory needs to process a batch of parts. It is planned to process 180 parts per day, which can be completed in 5 days; the actual processing is 30 parts less than planned per day, how many days will it actually take to complete?
某厂要加工一批零件，计划每天加工180个，5天可以完成；实际每天比计划少加工30个，实际要多少天完成？
<gadget id="calculator">180 * 5</gadget>
<output>900</output>

<gadget id="calculator">180 - 30</gadget>
<output>150</output>

<gadget id="calculator">900 / 150</gadget>
<output>6</output>

<result>6</result>