The train has traveled 200 kilometers from City A to City B, which is four times the remaining distance. How many kilometers are there between the two cities?
火车从甲城到乙城，现已行了200千米，是剩下路程的4倍．甲乙两城相距多少千米？
<gadget id="calculator">200 / 4</gadget>
<output>50</output>

<gadget id="calculator">200 + 50</gadget>
<output>250</output>

<result>250</result>