The whole marathon is about 42km. On average, a drinking water service point is set up every 3km (not at the starting point, but at the end point). How many such service points are there in the whole journey?
马拉松比赛全程约42km．平均每3km设置一处饮水服务点(起点不设，终点设)，全程一共有多少处这样的服务点？
<gadget id="calculator">42 / 3</gadget>
<output>14</output>

<result>14</result>