A train runs from city A to city B at 8:00 am, travels 105 kilometers per hour, and arrives at city B at 3:00 pm. How many kilometers is there between cities A and B?
一列火车上午8时从甲城开往乙城，每小时行105千米，下午3时到了乙城，甲、乙两城之间有多少千米？
<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<gadget id="calculator">105 * 7</gadget>
<output>735</output>

<result>735</result>