A rectangle with a length of 6 decimeters and a width of 4 decimeters is enlarged by 3:1, what is the area of the figure obtained in square decimeters?
一个长6分米、宽4分米的长方形按3：1放大，得到的图形面积是多少平方分米．
<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">24 * 9</gadget>
<output>216</output>

<result>216</result>