The sum of the sides of a cuboid is 68cm, its height is 5cm, and its length is 8cm. Find the surface area of the cuboid.
一个长方体棱长总和是68cm，它的高是5cm、长是8cm，求长方体的表面积．
<gadget id="calculator">8 * 5</gadget>
<output>40</output>

<gadget id="calculator">68 / 4</gadget>
<output>17</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">17 - 13</gadget>
<output>4</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">40 + 32 + 20</gadget>
<output>92</output>

<gadget id="calculator">92 * 2</gadget>
<output>184</output>

<result>184</result>