A rectangular flower bed is 20 meters long and 15 meters wide, and a path 1 meter wide is paved around the flower bed. What is the area of the path in square meters?
一个长方形的花坛，长20米，宽15米，在花坛四周铺上宽1米的小路．小路的面积是多少平方米？
<gadget id="calculator">20 + 1 + 1</gadget>
<output>22</output>

<gadget id="calculator">15 + 1 + 1</gadget>
<output>17</output>

<gadget id="calculator">22 * 17</gadget>
<output>374</output>

<gadget id="calculator">20 * 15</gadget>
<output>300</output>

<gadget id="calculator">374 - 300</gadget>
<output>74</output>

<result>74</result>