The engineering team repaired a road, and 270m was repaired in 9 days, leaving 630m. According to this calculation, how many days will it take to complete the road?
工程队修一条路，开工9天修了270m，剩下630m．照这样计算，修完这条路共要多少天？
<gadget id="calculator">270 + 630</gadget>
<output>900</output>

<gadget id="calculator">270 / 9</gadget>
<output>30</output>

<gadget id="calculator">900 / 30</gadget>
<output>30</output>

<result>30</result>