Cars A and B are traveling towards each other from places A and B respectively. Car A travels 65 kilometers per hour, and car B travels 75 kilometers per hour. Car A meets car B at a distance of 15 kilometers from the midpoint of the journey. What is the distance between B and B?
甲乙两车分别从A、B两地相向而行，甲车每小时行65千米，乙车每小时行75千米，甲车在离全程中点15千米处和乙车相遇，A、B两地距离多少千米．
<gadget id="calculator">75 - 65</gadget>
<output>10</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">15 * (1/5)</gadget>
<output>3</output>

<gadget id="calculator">65 + 75</gadget>
<output>140</output>

<gadget id="calculator">3 * 140</gadget>
<output>420</output>

<result>420</result>