48cm long iron wire is used to form a rectangle. The ratio of the length to width of the rectangle is 2:1. What is the length of the rectangle in cm?
用48cm长的铁丝围成一个长方形，长方形的长和宽的比是2：1，则这个长方形的长是多少cm．
<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>

<result>16</result>