A rectangular piece of land has a circumference of 48 meters and a ratio of length to width of 5:3. What is the area of this rectangle in square meters?
一块长方形地，量得它的周长是48米，长和宽的比是5：3．这块长方形地的面积是多少平方米？
<gadget id="calculator">48 / 2</gadget>
<output>24</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">24 * (5/8)</gadget>
<output>15</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">24 * (3/8)</gadget>
<output>9</output>

<gadget id="calculator">15 * 9</gadget>
<output>135</output>

<result>135</result>