Some chairs are placed on one side of the road in the park. There are 68 chairs in total from the start point to the end point. The distance between every two chairs is 10 meters. How long is the road in meters?
公园路边的一侧放了一些椅子，从起点到终点一共有68把，每两椅子之间都相距10米，求这条路长多少米？
<gadget id="calculator">68 - 1</gadget>
<output>67</output>

<gadget id="calculator">67 * 10</gadget>
<output>670</output>

<result>670</result>