Two trains depart from two stations 800 kilometers apart at the same time, and meet each other after 8 hours. One of the trains travels 55 kilometers per hour, how many kilometers per hour does the other train travel?
两列火车同时从相距800千米的两站相对开出，8小时后相遇，其中一列火车每时行55km，另一列火车每时行多少千米？
<gadget id="calculator">800 / 8</gadget>
<output>100</output>

<gadget id="calculator">100 - 55</gadget>
<output>45</output>

<result>45</result>