A square flowerbed with a side length of 18 meters and a path of 2 meters around it, what is the area of the path?
一个正方形花圃，边长是18米，四周有一条2米的小路，求小路的面积？
<gadget id="calculator">18 + 2 + 2</gadget>
<output>22</output>

<gadget id="calculator">22 * 22</gadget>
<output>484</output>

<gadget id="calculator">18 * 18</gadget>
<output>324</output>

<gadget id="calculator">484 - 324</gadget>
<output>160</output>

<result>160</result>