A row of trees is planted in the campus. There are 11 trees from the beginning to the end, and the distance between every two trees is 5 meters. How long is the road on campus?
在校园里种了一排树，从起点到终点共有11棵，每两棵树之间都相距5米．校园里这条路长多少米？
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<result>50</result>