Cars A and B are traveling toward each other from two places at the same time and meet at a distance of 14 kilometers from the midpoint. When the two cars meet, what is the difference in kilometers between the distances traveled by them?
甲、乙两车同时从两地相向而行，距中点14千米的地方相遇，两车相遇时，它们所行路程的差是多少千米．
<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>