A car can drive from city A to city B at a certain speed in 5 hours. 3.5 hours after the car drove from City A, it was still 90 kilometers away from City B. How many miles is the distance between A and B?
一辆汽车按一定的速度从甲城开往乙城5小时可以到达．这辆汽车从甲城开出3.5小时后，距乙城还有90千米．甲、乙两城相距多少千米？
<gadget id="calculator">5 - 3.5</gadget>
<output>1.5</output>

<gadget id="calculator">90 / 1.5</gadget>
<output>60</output>

<gadget id="calculator">60 * 5</gadget>
<output>300</output>

<result>300</result>