A rectangular lawn with a length of 24m and a width of 16m has a square flower bed with a side length of 8m in the middle. How many square meters is the lawn?
一块长24m，宽16m的长方形草地中间有个边长为8m的正方形花坛．草地的面积是多少平方米？
<gadget id="calculator">24 * 16</gadget>
<output>384</output>

<gadget id="calculator">8 * 8</gadget>
<output>64</output>

<gadget id="calculator">384 - 64</gadget>
<output>320</output>

<result>320</result>