The distance between the east and west cities is 560 kilometers. Cars A and B drive from the two cities at the same time. After 1.5 hours, the distance between the two cars is still 320 kilometers. How many hours will it take for the two cars to meet?
东西两城相距560千米，甲乙两车同时从两城相对开出，1.5小时后，两车还相距320千米，两车再行多少小时才能相遇？
<gadget id="calculator">560 - 320</gadget>
<output>240</output>

<gadget id="calculator">240 / 1.5</gadget>
<output>160</output>

<gadget id="calculator">320 / 160</gadget>
<output>2</output>

<result>2</result>