Put colorful flags on one side of the road, one every 5 meters, and a total of 10 flags were inserted from the starting point to the end point. How long is this path?
在路的一侧插彩旗，每隔5米插一面，从起点到终点共插了10面．这条道路有多长？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<result>45</result>