There is a 180-meter-long path at the school gate. On the side of the path, a colorful flag is inserted every 3 meters (both ends must be inserted). How many flags are there in total?
在校门口有一条长180米的小路，在小路的一旁每隔3米插一面彩旗(两端要插)．一共要插多少面彩旗．
<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<result>61</result>