There is a flower bed with a length of 35m and a width of 24m. If a path with a width of 2.5m is built around the flower bed, what is the area of the path in square meters?
有一个长35m、宽24m的花坛，如果在这个花坛的四周修2.5m宽的小路，小路的面积是多少平方米？
<gadget id="calculator">35 + 2.5 + 2.5</gadget>
<output>40</output>

<gadget id="calculator">24 + 2.5 + 2.5</gadget>
<output>29</output>

<gadget id="calculator">40 * 29</gadget>
<output>1_160</output>

<gadget id="calculator">35 * 24</gadget>
<output>840</output>

<gadget id="calculator">1_160 - 840</gadget>
<output>320</output>

<result>320</result>