The trains depart from the two cities opposite each other, and the two trains meet on the way after 1.5 hours. It is known that car A travels 80 kilometers per hour and car B travels 60 kilometers per hour. If drawn on a map with a scale of 1; 3000000, what is the distance in centimeters between the two cities?
列火车分别从两城相对开出，1.5小时后两车在途中相遇．已知甲车每小时行80千米，乙车每小时行60千米．如果画在比例尺是1；3000000的地图上，两城之间的距离是多少厘米？
<gadget id="calculator">80 + 60</gadget>
<output>140</output>

<gadget id="calculator">1 / 3_000_000</gadget>
<output>1/3_000_000 = around 0</output>

<gadget id="calculator">140 * 1.5 * 100_000 * (1/3_000_000)</gadget>
<output>7</output>

<result>7</result>