train travels from Shanghai to Nanjing at a speed of 68 kilometers per hour, and it takes 4.8 hours to arrive. If it is to arrive within 3.2 hours, how many kilometers per hour should it travel on average?
一列火车以每小时68千米的速度从上海开往南京，4.8小时可以到达，如果要在3.2小时内到达，平均每小时应行多少千米？
<gadget id="calculator">4.8 / 3.2</gadget>
<output>1.5</output>

<gadget id="calculator">68 * 1.5</gadget>
<output>102</output>

<result>102</result>