A train travels 2,100 kilometers from place A to place B. After 24 hours, it will be 468 kilometers away from place B. How many kilometers per hour does the train travel on average?
一列火车从甲地开往乙地，全程2100千米，行24小时后，离乙地还有468千米，这列火车平均每小时行多少千米？
<gadget id="calculator">2_100 - 468</gadget>
<output>1_632</output>

<gadget id="calculator">1_632 / 24</gadget>
<output>68</output>

<result>68</result>