A cuboid has the sum of its sides 36 cm, its width and height 2 cm and 1 cm respectively. What is the surface area of this cuboid in square centimeters?
一个长方体，它的棱长总和是36厘米，宽和高分别是2厘米和1厘米．这个长方体的表面积是多少平方厘米？
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">9 - 2 - 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<gadget id="calculator">6 * 1</gadget>
<output>6</output>

<gadget id="calculator">2 * 1</gadget>
<output>2</output>

<gadget id="calculator">12 + 6 + 2</gadget>
<output>20</output>

<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<result>40</result>