Two trains of cars depart from cities A and B respectively, and the speed remains unchanged. After driving for 3 hours, the distance between the two cars is 320 kilometers. If they drive for another 2 hours, the two cars will meet. How many kilometers are there between the two cities?
两列汽车分别从甲、乙两城相对开出，速度保持不变，行驶3小时后两车相距320千米，如果再行驶2小时，则两车相遇．甲乙两城相距多少千米？
<gadget id="calculator">320 / 2</gadget>
<output>160</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">160 * 5</gadget>
<output>800</output>

<result>800</result>