The engineering team has to repair a section of road, and it has built 300 meters in the first 12 days. According to this calculation, it will take 20 days to complete the repair. How long is the road to be repaired?
工程队要修一段公路，前12天修了300米，照这样计算，还要20天才能修完，要修的这段路长多少米？
<gadget id="calculator">300 / 12</gadget>
<output>25</output>

<gadget id="calculator">12 + 20</gadget>
<output>32</output>

<gadget id="calculator">25 * 32</gadget>
<output>800</output>

<result>800</result>