Two cars, fast and slow, depart from places A and B at the same time. After 4 hours, the two cars meet at a place 180 kilometers away from place A. After meeting, the two cars continue to drive at the original speed, and after another 3 hours the express train arrives at point B. How many kilometers is the distance between places A and B?
快、慢两车从甲乙两地同时相对开出，4小时后两车在距甲地180千米的地方相遇．相遇后两车继续按原速度行驶，又经过3小时快车到达乙地，甲乙两地的路程是多少千米？
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">180 / (4/7)</gadget>
<output>315</output>

<result>315</result>