During the "October 11" period, Xiaoli's family traveled to Beijing by train. They departed from Dalian at 8:30 in the evening and arrived at 5:00 in the morning the next day. The train travels 100 kilometers per hour. How many kilometers is the distance from Dalian to Beijing?
"十一期间"小立全家乘火车到北京旅游，晚上8：30从大连出发，第二天早上5：00到达，火车每小时行100千米，大连到北京的距离是多少千米？
<gadget id="calculator">12 - 8.5</gadget>
<output>3.5</output>

<gadget id="calculator">3.5 + 5</gadget>
<output>8.5</output>

<gadget id="calculator">100 * 8.5</gadget>
<output>850</output>

<result>850</result>