Our school held a large-scale theatrical performance during the celebration of June 1st. In order to make the venue more beautiful, we planned to plant 56 colorful flags around the square venue, and each side of the colorful flags was equal. There are colored flags at the four vertices, please calculate how many colored flags are needed on each side?
我们学校在庆六一活动中，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56面彩旗，每边彩旗相等．四个顶点都有彩旗，请你计算一下每边各需要有多少彩旗？
<gadget id="calculator">56 / 4</gadget>
<output>14</output>

<gadget id="calculator">14 + 1</gadget>
<output>15</output>

<result>15</result>