marathon is held in a city, starting from the city gymnasium, and finally returning to the city gymnasium. The total length is 42 kilometers. There are 7 tea stations equidistant along the road, how many kilometers is the distance between every two adjacent tea stations?
某城市举行马拉松长跑比赛，从市体育馆出发，最后再回到市体育馆．全长42千米．沿途等距离设茶水站7个，求每两个相邻的茶水站之间的距离是多少千米？
<gadget id="calculator">42 / 2 / 7</gadget>
<output>3</output>

<result>3</result>