A production team in an auto parts factory processes a batch of parts. The original plan was to process 200 pieces per day, which took 12 days to complete. Actually processed 240 per day, how many days earlier than planned to complete the task?
汽车配件厂的一个生产小组加工一批零件．原计划每天加工200个，12天完成．实际每天加工了240个，这样比计划提前几天完成任务？
<gadget id="calculator">12 / 240</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">200 * (1/20)</gadget>
<output>10</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<result>2</result>