The furniture store orders 400 square logs, the cross-sectional area of each square log is 25dm**2, and the length is 2m. How many square meters are these timbers in total?
家俱店订购400根方木，每根方木的横截面的面积是25dm**2，长是2m．这些木料一共是多少方？
<gadget id="calculator">0.25 * 2 * 400</gadget>
<output>200</output>

<result>200</result>