Use 60 one-meter-long fences to enclose a rectangular vegetable field. The ratio of length to width is 3:2. How many square meters is the area of this vegetable field?
用60根一米长的栅栏围一块长方形菜地，长与宽的比是3：2，这块菜地的面积是多少平方米？
<gadget id="calculator">60 / 2</gadget>
<output>30</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">30 * (3/5)</gadget>
<output>18</output>

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

<gadget id="calculator">30 * (2/5)</gadget>
<output>12</output>

<gadget id="calculator">18 * 12</gadget>
<output>216</output>

<result>216</result>