The perimeter of a square flower bed is 36 meters. If there is a square pool with a side length of 2 meters in the center, and the rest is used for planting flowers and plants, how much is the area for planting flowers and plants?
一个正方形花坛的周长是36米，若其中心有一个边长为2米的正方形水池，其余部分用于栽种花草，栽种花草的面积有多少？
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">9 * 9</gadget>
<output>81</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">81 - 4</gadget>
<output>77</output>

<result>77</result>