An ordinary train travels from Guangzhou to Shanghai at a speed of 120 km/h and arrives in 12 hours. An express train travels from Shanghai to Guangzhou and arrives in 10 hours. How many kilometers per hour does the express train travel on average?
一列普通列车以120千米/小时的速度从广州开往上海，经过12小时到达．一列车特快列车从上海到广州，10小时到达，特快列车平均每小时行驶多少千米？
<gadget id="calculator">12 / 10</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">120 * (6/5)</gadget>
<output>144</output>

<result>144</result>