Uncle Wang drove from place A to place B, and traveled 100 kilometers in the first 2 hours. At this speed, it will take 5 hours to travel from A to B. How far is A and B? (Solve with ratio)
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，从甲地到乙地一共要用5小时，甲乙两地相距多远？(用比例解)
<gadget id="calculator">100 / 2</gadget>
<output>50</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<result>250</result>