A residential area covers an area of 40,000 square meters, of which the green area is only 2,000 square meters. According to the greening requirements, the green area of the community must reach at least 25%. Please ask at least three questions and answer them.
某小区占地面积为40000平方米，其中绿地面积只有2000平方米．根据绿化要求，小区绿地面积至少要达到25%．请你至少提出三个问题并予以解答．
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40_000 * (1/4)</gadget>
<output>10_000</output>

<gadget id="calculator">10_000 - 2_000</gadget>
<output>8_000</output>

<result>8_000</result>