cuboid has a length of 15 cm, a width of 12 cm, and a height of 10 cm. What is its surface area in square centimeters?
一个长方体，长15厘米，宽12厘米，高10厘米，它的表面积是多少平方厘米．
<gadget id="calculator">15 * 12</gadget>
<output>180</output>

<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">180 + 150 + 120</gadget>
<output>450</output>

<gadget id="calculator">450 * 2</gadget>
<output>900</output>

<result>900</result>