cuboid has a length, width, and height of 5 cm, 4 cm, and 2 cm, respectively. If the length increases by 2 centimeters and the width and height remain the same, how many square centimeters does the surface area increase?
一个长方体，长、宽、高分别为5厘米，4厘米，2厘米．如果长增加2厘米，宽和高不变，表面积就增加多少平方厘米．
<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 2 * 2</gadget>
<output>24</output>

<result>24</result>