A rectangular vegetable field has a perimeter of 130 meters and a ratio of length to width of 8:5. What is the area of this vegetable field?
一块长方形菜地，周长是130米，长与宽的比是8：5，这块菜地的面积是多少？
<gadget id="calculator">130 / 2</gadget>
<output>65</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">8 / 13</gadget>
<output>8/13 = around 0.615385</output>

<gadget id="calculator">65 * (8/13)</gadget>
<output>40</output>

<gadget id="calculator">5 / 13</gadget>
<output>5/13 = around 0.384615</output>

<gadget id="calculator">65 * (5/13)</gadget>
<output>25</output>

<gadget id="calculator">40 * 25</gadget>
<output>1_000</output>

<result>1_000</result>