A rectangular steel plate has a circumference of 24m and a ratio of length to width of 3:1. What is the area of this rectangular steel plate in m**3.
一块长方形钢板，周长是24m，长和宽的比是3：1，这块长方形钢板的面积是多少m**3．
<gadget id="calculator">24 / 2</gadget>
<output>12</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">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 * (3/4) * 12 * (1/4)</gadget>
<output>27</output>

<result>27</result>