The length of a cuboid is 20 cm, the width and height are 16 cm, what is the surface area of this cuboid?
一个长方体的长是20厘米，宽和高是16厘米，这个长方体的表面积是多少平方厘米．
<gadget id="calculator">20 * 16 * 4</gadget>
<output>1_280</output>

<gadget id="calculator">16 * 16 * 2</gadget>
<output>512</output>

<gadget id="calculator">1_280 + 512</gadget>
<output>1_792</output>

<result>1_792</result>