A road was built in Dabu Township. It was planned to build 250 meters per day, which could be completed in 6 days. In fact, an extra 50 meters was built every day. How many days did it actually take to build this road? (Solve with ratio)
大埠乡修一条路，计划每天修250米，6天可以修完，实际每天多修了50米，修这条路实际用了多少天？(用比例解)
<gadget id="calculator">250 * 6</gadget>
<output>1_500</output>

<gadget id="calculator">250 + 50</gadget>
<output>300</output>

<gadget id="calculator">1_500 / 300</gadget>
<output>5</output>

<result>5</result>