If a cuboid with a surface area of 85 square decimeters is cut into two identical cubes, what is the surface area of one of the cubes?
把一个表面积是85平方分米的长方体，截成两个完全一样的正方体，其中一个正方体的表面积是多少？
<gadget id="calculator">85 / 10</gadget>
<output>17/2 = around 8.5</output>

<gadget id="calculator">(17/2) * 6</gadget>
<output>51</output>

<result>51</result>