The road construction team built a 1,200-meter-long road, and 320 meters were repaired in the first 4 days. According to this calculation, how many days are left? (Solve with ratio)
修路队修一条长1200米的公路，前4天修了320米，照这样计算，余下的还要几天？(用比例解)
<gadget id="calculator">1_200 - 320</gadget>
<output>880</output>

<gadget id="calculator">320 / 4</gadget>
<output>80</output>

<gadget id="calculator">880 / 80</gadget>
<output>11</output>

<result>11</result>