When 14 small cubes of the same size are arranged in a row to get a cuboid, what is the reduced area accounted for by the sum of the surface areas of the original 14 cubes?
用14个大小相同的小正方体排成一排后得出一个长方体，减少的面积占原来14个正方体表面积之和的多少．
<gadget id="calculator">13 / 42</gadget>
<output>13/42 = around 0.309524</output>

<result>13/42 = around 0.309524</result>