To place flower pots on the edge of a pentagonal pool so that there are 6 potted flowers on each side, how many potted flowers are needed at least?
要在五边形的水池边上摆花盆，使每一边都有6盆花，最少需要几盆花？
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<result>25</result>