If the perimeter of a rectangle is 240 cm and the ratio of length to width is 3:2, find the area of the rectangle.
一个长方形的周长是240厘米，长和宽的比是3：2，求这个长方形的面积．
<gadget id="calculator">240 / 2</gadget>
<output>120</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">120 * (3/5)</gadget>
<output>72</output>

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

<gadget id="calculator">120 * (2/5)</gadget>
<output>48</output>

<gadget id="calculator">72 * 48</gadget>
<output>3_456</output>

<result>3_456</result>