A cuboid has a length of 9 meters, a width of 6 meters and a height of 5 meters. What is its surface area.
一个长方体的长是9米，宽是6米，高是5米．它的表面积是多少．
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">54 + 45 + 30</gadget>
<output>129</output>

<gadget id="calculator">129 * 2</gadget>
<output>258</output>

<result>258</result>