A train travels 520 kilometers from city A to city B in the first 5 hours, and travels an average of 18 kilometers per hour in the last 7 hours compared with the first 5 hours. How many kilometers per hour does the train travel from city A to city B on average?
一列火车从甲城到乙城，前5小时行驶了520千米，后7小时比前5小时平均每小时多行驶18千米．这列火车从甲城到乙城平均每小时行驶多少千米？
<gadget id="calculator">520 / 5</gadget>
<output>104</output>

<gadget id="calculator">104 + 18</gadget>
<output>122</output>

<gadget id="calculator">122 * 7</gadget>
<output>854</output>

<gadget id="calculator">854 + 520</gadget>
<output>1_374</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">1_374 / 12</gadget>
<output>229/2 = around 114.5</output>

<result>229/2 = around 114.5</result>