Experimental Primary School held a large-scale theatrical performance during the celebration of June 1st. In order to make the venue more beautiful, it planned to plant 60 colorful flags around the square venue, each side of which was equal to each other. There are colored flags at all four vertices, how many colored flags are needed on each side.
实验小学在庆六一活动中，开展了大型的文艺汇演，为了把会场装扮得更加美观，准备在正方形会场的四周插上60面彩旗，每边彩旗相等．四个顶点都有彩旗，每边各需要有多少彩旗．
<gadget id="calculator">60 + 4</gadget>
<output>64</output>

<gadget id="calculator">64 / 4</gadget>
<output>16</output>

<result>16</result>