The perimeter of a rectangle is 40 decimeters, and the ratio of length to width is 3:2. What is the area of the rectangle?
一个长方形的周长是40分米，长和宽的比是3：2，这个长方形的面积是多少平方分米？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 * (3/5)</gadget>
<output>12</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 * (2/5)</gadget>
<output>8</output>

<gadget id="calculator">12 * 8</gadget>
<output>96</output>

<result>96</result>