A cuboid fuel tank with a square base, after cutting its side, just get a square with a side length of 12 decimeters, what is the volume of the fuel tank?
一个底面是正方形的长方体油箱，把它的侧面剪开后，正好得到一个边长为12分米的正方形，求油箱的容积？
<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 12</gadget>
<output>108</output>

<result>108</result>