The garment factory needs to process 1,000 suits, 80 suits per day for the first 4 days, and 5 more suits per day for the rest. How many days will it take to complete this batch of tasks?
服装厂要加工1000套西服，前4天每天加工80件，余下的准备每天多加工5件，完成这批任务一共要用多少天？
<gadget id="calculator">80 * 4</gadget>
<output>320</output>

<gadget id="calculator">1_000 - 320</gadget>
<output>680</output>

<gadget id="calculator">80 + 5</gadget>
<output>85</output>

<gadget id="calculator">680 / 85</gadget>
<output>8</output>

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

<result>12</result>