Two cars, A and B, leave opposite places at the same time. Car A travels 80 km per hour, and car B travels 60 km per hour. After (5/7) hours, the two cars meet. How many kilometers are the distance between the two places?
甲乙两车同时从两地相对开出，甲车每小时行80km，乙车每小时行60km，经(5/7)小时两车相遇，两地相距多少千米？
<gadget id="calculator">80 + 60</gadget>
<output>140</output>

<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">140 * (5/7)</gadget>
<output>100</output>

<result>100</result>