rectangle with a length of 4 cm and a width of 2 cm is enlarged by 4:1, what is the area of the obtained figure in cm**2.
一个长4cm，宽2cm的长方形按4：1放大，得到的图形的面积是多少cm**2．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">2 * 4</gadget>
<output>8</output>

<gadget id="calculator">16 * 8</gadget>
<output>128</output>

<result>128</result>