After two cars A and B drive from A and B for 1.2 hours, the distance between the two cars is 435 kilometers. According to the same speed, the two cars meet after 4.2 hours. What is the distance between A and B?
甲、乙两车从A、B两地相对开出1.2小时后，两车相距435千米，照同样的速度，出发4.2小时两车相遇，A、B两地相距多少千米．
<gadget id="calculator">4.2 - 1.2</gadget>
<output>3</output>

<gadget id="calculator">435 / 3</gadget>
<output>145</output>

<gadget id="calculator">145 * 4.2</gadget>
<output>609</output>

<result>609</result>