The toy factory plans to make toys in 12 days, 160 toys per day. Now, due to the improvement of technology level, it makes 80 more toys per day than the original plan. How many days can the task be completed in advance?
玩具厂计划12天制作玩具，每天制作160个，现由于技术水平提高，每天比原计划多做80个，可以提前多少天完成任务？
<gadget id="calculator">160 * 12</gadget>
<output>1_920</output>

<gadget id="calculator">160 + 80</gadget>
<output>240</output>

<gadget id="calculator">1_920 / 240</gadget>
<output>8</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<result>4</result>