Uncle Wang drove from place A to place B for business, and traveled 45 kilometers per hour, half of the journey in 2 hours. How many kilometers are there between places A and B?
王叔叔从甲地开车到乙地办事，每小时行45千米，2小时行了全程的一半，甲、乙两地相距多少千米？
<gadget id="calculator">45 * 2 * 2</gadget>
<output>180</output>

<result>180</result>