On May 1 Labor Day, the Propaganda Department of the Municipal Party Committee planted colorful flags on one side of the railing of a bridge. A total of 8 flags were inserted from the beginning to the end. The distance between each two colored flags was 8 meters. How long is the bridge?
五一劳动节，市委宣传部在一座桥的一边栏杆上插彩旗，从头到尾一共插8面，每两面彩旗之间都相距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>