Cars A and B leave from Shanghai and Beijing respectively at the same time and meet each other in 7 hours. It is known that car A is 105 kilometers per hour and car B is 95 kilometers per hour. What is the distance in kilometers between Shanghai and Beijing?
甲、乙两辆汽车分别从上海和北京同时开出，7小时相遇．已知甲车每小时105千米，乙车每小时95千米．问上海与北京两地的距离是多少千米？
<gadget id="calculator">105 + 95</gadget>
<output>200</output>

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

<result>1_400</result>