It takes 6 hours for a passenger car and 9 hours for a truck to travel the same distance. If the two cars drive toward each other from two stations at the same time, when they meet, how much longer will the bus travel than the truck?
行驶同一段路程，客车要6小时，货车要9小时，如果两车同时从两站相向而行，相遇时，客车比货车多行这段路的几分之几？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">(1/6) + (1/9)</gadget>
<output>5/18 = around 0.277778</output>

<gadget id="calculator">1 / (5/18)</gadget>
<output>18/5 = around 3.6</output>

<gadget id="calculator">(1/6) * (18/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(1/9) * (18/5)</gadget>
<output>2/5 = around 0.4</output>

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

<result>1/5 = around 0.2</result>