On the 45-meter-long runway, a red flag is inserted every 5 meters. How many red flags are inserted from the beginning to the end?
在45米长的跑道上，每隔5米插一面红旗，从头到尾共插了多少面红旗．
<gadget id="calculator">45 / 5</gadget>
<output>9</output>

<gadget id="calculator">9 + 1</gadget>
<output>10</output>

<result>10</result>