A passenger train and a freight train depart from A and B oppositely at the same time. When the two trains meet, the passenger train has traveled 70% of the journey, and the freight train is still 360 meters away from the midpoint. It is known that it will take 18 hours for the passenger train to complete the journey. How many kilometers per hour?
一列客车和一列货车同时从甲乙两地相对开出，当两列火车相遇时，客车走了全程的70%，货车距离中点还有360米，已知客车走完全程要用18小时，客车每小时行多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/2) - (3/10)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">360 / (1/5) / 18</gadget>
<output>100</output>

<result>100</result>