A bus: 105 km/h and a minivan: 95 km/h. The two cars depart from Beijing and Shanghai at the same time and meet each other after 7 hours. How many kilometers is the distance between Beijing and Shanghai?
大客车：105千米/时和面包车：95千米/时，两车分别从北京和上海同时相向开出，经过7小时相遇，北京和上海相距多少千米？
<gadget id="calculator">105 + 95</gadget>
<output>200</output>

<gadget id="calculator">200 * 7</gadget>
<output>1_400</output>

<result>1_400</result>