The factory needs to process a batch of parts. A certain workshop originally planned to finish the job in 5 days, and made 480 parts per day. Because of the factory's needs, the workshop actually made 120 more parts per day. How many days can it actually complete the task?
工厂要加工一批零件，某个车间原计划5天完成，每天做480个，因为工厂需要，该车间实际每天多做120个，实际几天可以完成任务？
<gadget id="calculator">480 + 120</gadget>
<output>600</output>

<gadget id="calculator">5 / 600</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">480 * (1/120)</gadget>
<output>4</output>

<result>4</result>