Huayuan Road Elementary School is holding a party to celebrate "June 1st". The venue is a square, and a potted flower is required to be placed on the four corners. If 8 potted flowers are placed on each side, how many potted flowers will be needed to arrange the venue?
花园路小学庆"六一"举行联欢会，会场成一个正方形，要求四个角上都放一盆花，如果每边要放8盆花，布置会场一共需要多少盆花？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 - 4</gadget>
<output>28</output>

<result>28</result>