If the length, width, and height of a cuboid are increased by 3 cm, how much will the total edge length increase in cm?
一个长方体的长、宽、高都增加3cm，那么总棱长将增加多少cm．
<gadget id="calculator">3 + 3 + 3</gadget>
<output>9</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<result>36</result>