A road construction team builds a road and repairs 75 meters in 3 days. At this speed, the task can be completed in 15 more days. How long is this road in meters?
一个筑路队修筑一条公路，3天修了75米，照这样的速度，再修15天就可完成任务．这条公路全长多少米？
<gadget id="calculator">75 / 3</gadget>
<output>25</output>

<gadget id="calculator">3 + 15</gadget>
<output>18</output>

<gadget id="calculator">25 * 18</gadget>
<output>450</output>

<result>450</result>