If a 2-meter-long square log (with a square bottom) is sawn into three sections, the surface area increases by 5.76 square decimeters. What is the original volume of this square log?
把一根长2米的方木(底面是正方形)锯成三段，表面积增加5.76平方分米，原来这根方木的体积是多少立方分米？
<gadget id="calculator">5.76 / 4</gadget>
<output>1.44</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">1.44 * 20</gadget>
<output>28.8</output>

<result>28.8</result>