passenger car travels from city A to city B at a speed of 45 kilometers per hour. The train departs at 9:00 am and arrives at 16:00, how many kilometers is the distance between A and B?
一辆客车以每小时45千米的速度从甲城开往乙城．上午9时发车，16时到达，甲、乙两城相距多少千米？
<gadget id="calculator">16 - 9</gadget>
<output>7</output>

<gadget id="calculator">45 * 7</gadget>
<output>315</output>

<result>315</result>