Two trains leave at the same time from stations A and B, which are 360 kilometers apart. It is known that car A travels 42 kilometers per hour and is 6 kilometers slower than car B per hour. When the two cars meet, how much longer is car B than car A?
两列火车同时从相距360千米的甲、乙两站相对开出．已知甲车每小时行42千米，比乙车每小时慢6千米，问两车相遇时乙车比甲车多行多少千米？
<gadget id="calculator">42 + 42 + 6</gadget>
<output>90</output>

<gadget id="calculator">360 / 90</gadget>
<output>4</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<result>24</result>