A cuboid is 6 decimeters long, 5 decimeters wide, and 4 decimeters high. What is its surface area?
一个长方体，长6分米，宽5分米，高4分米．它的表面积是多少？
<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">30 + 20 + 24</gadget>
<output>74</output>

<gadget id="calculator">74 * 2</gadget>
<output>148</output>

<result>148</result>