The speed ratio of the passenger car and the truck is 7:4. The two cars start from two places at the same time and meet at a distance of 18 kilometers from the midpoint. How many meters is the truck from the end point?
客车与货车的速度比是7：4，两车同时从两地出发，相向而行在离中点18千米处相遇，相遇后，客车速度不变，货车提高25%，当客车到目的地时，货车距终点还有多少米？
<gadget id="calculator">4 + 7</gadget>
<output>11</output>

<gadget id="calculator">7 / 11</gadget>
<output>7/11 = around 0.636364</output>

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

<gadget id="calculator">(7/11) - (1/2)</gadget>
<output>3/22 = around 0.136364</output>

<gadget id="calculator">18 / (3/22)</gadget>
<output>132</output>

<gadget id="calculator">132 * (7/11)</gadget>
<output>84</output>

<gadget id="calculator">132 - 84</gadget>
<output>48</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">4 * (5/4)</gadget>
<output>5</output>

<gadget id="calculator">7 / 5</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">1 / (7/5)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">48 * (5/7)</gadget>
<output>240/7 = around 34.285714</output>

<gadget id="calculator">84 - (240/7)</gadget>
<output>348/7 = around 49.714286</output>

<result>348/7 = around 49.714286</result>