passenger car departs from point A and a truck departs from point B at the same time. After 3 hours, the ratio of the remaining distance of the passenger car to the distance traveled is 3:7. The truck exceeds the midpoint by 37 kilometers, and the passenger car is more than the truck per hour. Line 18 kilometers. How many kilometers are there between A and B?
一客车从甲地和一货车从乙地同时相对开出，3小时后客车剩下的路程与已行的路程的比是3：7，货车超过中点37千米，客车比货车每小时多行18千米．甲、乙两地相距多少千米？
<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">54 + 37</gadget>
<output>91</output>

<gadget id="calculator">3 + 7</gadget>
<output>10</output>

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

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(7/10) - (1/2)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">91 / (1/5)</gadget>
<output>455</output>

<result>455</result>