A road construction team wants to build a road, and plans to build 200 meters per day, which can be completed in 3 days. Actually repaired 150 meters per day, how many days did it actually take?
一个修路队要修一条路，计划每天修200米，3天可以修完．实际每天修了150米，实际用了多少天？
<gadget id="calculator">200 * 3</gadget>
<output>600</output>

<gadget id="calculator">600 / 150</gadget>
<output>4</output>

<result>4</result>