A 150-meter-long road has a colored flag every 6 meters on one side, how many flags are needed? (both ends)
一条长150米的道路一边每隔6米放置一条彩旗，需要多少条？(两头都放)
<gadget id="calculator">150 / 6</gadget>
<output>25</output>

<gadget id="calculator">25 + 1</gadget>
<output>26</output>

<result>26</result>