The school wants to dig a cuboid sandpit with a length of 4m, a width of 2m, and a depth of 0.4m. What is the area of the sandpit in square meters?
学校要挖一个长方体形状沙坑，长为4m，宽为2m，深为0.4m，沙坑的占地面积是多少平方米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>