The length of a cuboid is 12 cm, the width is 3/4, and the height is 3 cm. What is the surface area of the cuboid in square centimeters?
一个长方体的长是12厘米，宽是长的(3/4)，高是3厘米，这个长方体的表面积是多少平方厘米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">12 * (3/4)</gadget>
<output>9</output>

<gadget id="calculator">12 * 9</gadget>
<output>108</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<gadget id="calculator">9 * 3</gadget>
<output>27</output>

<gadget id="calculator">108 + 36 + 27</gadget>
<output>171</output>

<gadget id="calculator">171 * 2</gadget>
<output>342</output>

<result>342</result>