To build a road, 160 meters were built in the first 4 days. At this speed, it will take 8 days to complete the road. How long is this road in meters?
修一条路，前4天修了160米，照这样的速度，还要8天才能把路全部修完，这条路全长多少米？
<gadget id="calculator">160 / 4</gadget>
<output>40</output>

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

<gadget id="calculator">40 * 12</gadget>
<output>480</output>

<result>480</result>