A rectangular piece of land has a ratio of length to width of 6:5. According to the scale of 1:1000, it is drawn on the map. Its circumference is 22 cm. It is planned to build a building on this land. The floor area is 50% of the land. What is the approximate floor area of this building? rice?
一块长方形地，长与宽的比是6：5．按1：1000的比例尺画在图上，其周长是22厘米，计划在这块地上盖一幢楼，占地面积是这块地的50%，这幢楼的占地面积大约是多少平方米？
<gadget id="calculator">22 / 2</gadget>
<output>11</output>

<gadget id="calculator">6 + 5</gadget>
<output>11</output>

<gadget id="calculator">6 / 11</gadget>
<output>6/11 = around 0.545455</output>

<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">(6/11) / (1/1_000) / 100</gadget>
<output>60/11 = around 5.454545</output>

<gadget id="calculator">11 * (6/11)</gadget>
<output>6</output>

<gadget id="calculator">11 - 6</gadget>
<output>5</output>

<gadget id="calculator">5 / (1/1_000) / 100</gadget>
<output>50</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">11 * (60/11) * 50 * (1/2)</gadget>
<output>1_500</output>

<result>1_500</result>