A cuboid with a length of 2 meters and a square cross section is cut into four sections along the cross section. The sum of the surface areas increases by 36 square decimeters. What is the volume of the original cuboid?
将一个长2米，横截面是正方形的长方体，沿横截面截成四段，表面积之和比原来增加了36平方分米，原来长方体的体积是多少立方分米．
<gadget id="calculator">36 / 6</gadget>
<output>6</output>

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

<gadget id="calculator">6 * 20</gadget>
<output>120</output>

<result>120</result>