The perimeter of a rectangle is 480 meters, and the ratio of length to width is 2:1, find the area of the rectangle.
一个长方形周长是480米，长和宽的比为2：1，求长方形的面积．
<gadget id="calculator">480 / 2</gadget>
<output>240</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">240 * (2/3)</gadget>
<output>160</output>

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

<gadget id="calculator">240 * (1/3)</gadget>
<output>80</output>

<gadget id="calculator">160 * 80</gadget>
<output>12_800</output>

<result>12_800</result>