Two cubes with side lengths of 2 cm are put together to form a cuboid. How much is the surface area of this cuboid reduced from the sum of the surface areas of the original two cubes (fill in the fraction).
两个棱长都是2厘米的正方体拼成一个长方体，这个长方体的表面积比原来两个正方体表面积之和减少了多少(填分数)．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<gadget id="calculator">2 * 2 * 6 * 2</gadget>
<output>48</output>

<gadget id="calculator">8 / 48</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>