The perimeter of a rectangular piece of land is 1000 meters, and the ratio of length to width is 3:2. What is the area of the land in hectares?
一块长方形地的周长是1000米，长与宽的比3：2．这块地的面积是多少公顷？
<gadget id="calculator">1_000 / 2</gadget>
<output>500</output>

<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

<gadget id="calculator">(2/5) / 10_000</gadget>
<output>1/25_000 = around 0.00004</output>

<gadget id="calculator">500 * (3/5) * 500 * (1/25_000)</gadget>
<output>6</output>

<result>6</result>