A rectangle whose length is 8mm and width is 4mm is enlarged by 4:1, what is the area of the figure?
一个长方形长是8毫米，宽是4毫米的长方形按4：1放大，得到图形的面积是多少．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">32 * 16</gadget>
<output>512</output>

<result>512</result>