A cuboid is 2.4 decimeters long, 1.5 decimeters wide, and 5 decimeters high. What is the surface area of this cuboid?
一个长方体长2.4分米，宽1.5分米，高5分米，这个长方体的表面积是多少平方分米？
<gadget id="calculator">2.4 * 1.5</gadget>
<output>3.6</output>

<gadget id="calculator">2.4 * 5</gadget>
<output>12</output>

<gadget id="calculator">1.5 * 5</gadget>
<output>7.5</output>

<gadget id="calculator">3.6 + 12 + 7.5</gadget>
<output>23.1</output>

<gadget id="calculator">23.1 * 2</gadget>
<output>46.2</output>

<result>46.2</result>