Uncle Wang drove from place A to place B, and traveled 100 kilometers in the first 2 hours. At this speed, it took 4.5 hours to go from A to B. How far is A and B? (Answer with proportional knowledge)
王叔叔开车从甲地到乙地，前2小时行了100千米．照这样的速度，从甲地到乙地一共用了4.5小时，甲乙两地相距多远？(用比例知识解答)
<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">50 * 4.5</gadget>
<output>225</output>

<result>225</result>