The perimeter of a rectangle is 48 cm, and the ratio of its length to width is 2:1, what is the area of the rectangle?
一个长方形的周长是48厘米，它的长与宽的比是2：1，这个长方形的面积是多少．
<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">24 * (2/3)</gadget>
<output>16</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">24 * (1/3)</gadget>
<output>8</output>

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

<result>128</result>