If a cube with a surface area of 18dm**2 is cut into two identical cuboids, how much is the surface area increased by dm**2?
把一个表面积是18dm**2的正方体，切成两个完全相同的长方体，表面积增加了多少dm**2．
<gadget id="calculator">18 / 6</gadget>
<output>3</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>