The perimeter of a rectangular vegetable field is 60m, and the ratio of length to width is 8:7. What is the area of this vegetable field in square meters?
一块长方形的菜地的周长60m，长与宽的比是8﹕7，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">8 + 7</gadget>
<output>15</output>

<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>

<gadget id="calculator">30 * (8/15)</gadget>
<output>16</output>

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">30 * (7/15)</gadget>
<output>14</output>

<gadget id="calculator">16 * 14</gadget>
<output>224</output>

<result>224</result>