A passenger car and a truck leave two cities opposite each other at the same time. The speed ratio of the passenger car to the truck is 6:5 and the passenger car travels 42 kilometers per hour. The two cars meet at the midpoint of 7 kilometers. What is the distance in kilometers between the two places?
客车货车同时从两个城市相对开出，客车每小时行42千米，与货车速度的比是6：5，两车在中点7千米处相遇，两地相距多少千米．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">(6/11) - (5/11)</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">14 / (1/11)</gadget>
<output>154</output>

<result>154</result>