There are 8 colored flags on a bridge from the beginning to the end, and the distance between each two colored flags is 8 meters. How long is the bridge in meters?
在一座桥上插彩旗，从头到尾共插了8面，每两面彩旗之间的距离都是8米．这座桥长多少米？
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<result>56</result>