The perimeter of a rectangular dining table is 8 meters, and the ratio of length to width is 3:1. What is the area of this dining table in square meters?
一张长方形餐桌的周长是8米，长与宽的比是3：1．这张餐桌的面积是多少平方米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 * (3/4)</gadget>
<output>3</output>

<gadget id="calculator">4 - 3</gadget>
<output>1</output>

<gadget id="calculator">4 * (3/4) * 1</gadget>
<output>3</output>

<result>3</result>