Put 3 cubes of equal size in a row to form a cuboid. The surface area of this cuboid is equal to the surface area of the original 3 cubes.
把3个大小相等的正方体摆成一排，拼成一个长方体，这个长方体的表面积相当于原来3个正方体表面积的多少
<gadget id="calculator">1 * 6 * 3</gadget>
<output>18</output>

<gadget id="calculator">18 - 4</gadget>
<output>14</output>

<gadget id="calculator">14 / 18</gadget>
<output>7/9 = around 0.777778</output>

<result>7/9 = around 0.777778</result>