If a 2-meter-long square log (with a square bottom) is sawed into three sections, the surface area increases by 5.76 square decimeters. What is the original surface area 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，原来这根方木的表面积是多少平方分米？
<gadget id="calculator">1.2 * 20 * 4</gadget>
<output>96</output>

<gadget id="calculator">1.2 * 1.2 * 2</gadget>
<output>2.88</output>

<gadget id="calculator">96 + 2.88</gadget>
<output>98.88</output>

<result>98.88</result>