It took Uncle Li from a certain city to Beijing by train for 12 hours, and the train traveled 145 kilometers in one hour. How many kilometers is the city from Beijing?
李叔叔从某城市乘火车去北京用了12小时，火车1小时行145千米．该城市到北京有多少千米？
<gadget id="calculator">145 * 12</gadget>
<output>1_740</output>

<result>1_740</result>