Three cars A, B, and C drive from city A to city B simultaneously at the same speed. One hour after driving, car A has an accident, and cars B and C continue to move forward as usual. After stopping for half an hour, car A continues to move forward at 4/5 of its original speed. Cars B and C travel to a distance of 200 kilometers from city A. Car B has an accident, and car C continues on as usual. After stopping for half an hour, car B continues to move forward at 4/5 of its original speed. As a result, car C arrives at city B 1 hour earlier than car B, and car B arrives 1 hour earlier than car A. What is the distance in kilometers between cities A and B?
A，B，C三辆汽车以相同的速度同时从甲市开往乙市．开车后1小时A车出了事故，B和C两车照常前进．A车停了半小时后以原来速度的4/5继续前进．B，C两车行至距离甲市200千米处B车出了事故，C车照常前进．B车停了半小时后也以原来速度的4/5继续前进．结果到达乙市的时间C车比B车早1小时，B车比A车早1小时，甲、乙两市的距离为多少千米．
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1.5 / (1/4)</gadget>
<output>6</output>

<gadget id="calculator">0.5 / (1/4)</gadget>
<output>2</output>

<gadget id="calculator">6 - 2</gadget>
<output>4</output>

<gadget id="calculator">1 + 4</gadget>
<output>5</output>

<gadget id="calculator">200 / 5</gadget>
<output>40</output>

<gadget id="calculator">1 + 6</gadget>
<output>7</output>

<gadget id="calculator">40 * 7</gadget>
<output>280</output>

<result>280</result>