The distance between A and B is 200 kilometers. Two cars, passenger and cargo, drive from A to B at the same time. When the passenger car is 40 kilometers away from B, the truck is still 60 kilometers away from B. If the two cars are still driving at the original speed, when the passenger car arrives at point B, how many kilometers will the truck be short of arriving?
甲乙两地相距200千米，客、货两辆汽车同时从甲地开往乙地，当客车距离乙地40千米时，货车距离乙地还有60千米．如果两辆车还按原速度行驶，当客车到达乙地时，货车还差多少千米到达？
<gadget id="calculator">200 - 40</gadget>
<output>160</output>

<gadget id="calculator">200 - 60</gadget>
<output>140</output>

<gadget id="calculator">160 / 140</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">1 / (8/7)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">40 * (7/8)</gadget>
<output>35</output>

<gadget id="calculator">60 - 35</gadget>
<output>25</output>

<result>25</result>