Insert 20 small colored flags on the four strips of the square playground, so that there are the same number of small colored flags on each side, and the vertices should also be inserted. How many small flags can be inserted on each side?
把20面小彩旗插在正方形操场的四条上，使每条边上的小彩旗同样多，且顶点也要插．每边可插多少面小彩旗？
<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<result>6</result>