It takes 12 hours for a car to drive from City A to City B. It has already been driven for 4 hours, and there is still 1200 kilometers to the end. How many kilometers are the distance between the two cities?
汽车从甲城开往乙城，全程要12小时，已经行了4小时，离终点还有1200千米，两城相距多少千米？
<gadget id="calculator">12 - 4</gadget>
<output>8</output>

<gadget id="calculator">1_200 / 8</gadget>
<output>150</output>

<gadget id="calculator">150 * 12</gadget>
<output>1_800</output>

<result>1_800</result>