"Sunshine Community" covers an area of 22,000 square meters, of which the green area is 5,500 square meters. The state stipulates that the green area rate of residential quarters should not be lower than 30%. Has the green area rate of "Sunshine Community" reached the standard? If not, how many tens of thousands of square meters of landscaping is needed to meet the requirements?
"阳光小区"占地面积为2.2万平方米，其中，绿地面积0.55万平方米，国家规定居民住宅小区的绿地率不低于30%，"阳光小区"的绿地率达标了吗？如果没有，该小区还需绿化多少万平方米才能达到要求？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">2.2 * (3/10)</gadget>
<output>0.66</output>

<gadget id="calculator">0.66 - 0.55</gadget>
<output>0.11</output>

<result>0.11</result>