The engineering team repaired a road and built 71.7 meters in 3 days. At this speed, it can be completed in 18 more days. How many meters is this road?
工程队修一条公路，3天修了71.7米，照这样的速度，再修18天就可以修完．这条路长多少米？
<gadget id="calculator">71.7 / 3</gadget>
<output>23.9</output>

<gadget id="calculator">23.9 * 18</gadget>
<output>430.2</output>

<gadget id="calculator">71.7 + 430.2</gadget>
<output>501.9</output>

<result>501.9</result>