A school covers an area of 3000 square meters, of which the green area accounts for 22%, what is the green area of this school?
某学校占地面积3000平方米，其中绿化面积占22%，这个学校的绿化面积是多少．
<gadget id="calculator">22 / 100</gadget>
<output>11/50 = around 0.22</output>

<gadget id="calculator">3_000 * (11/50)</gadget>
<output>660</output>

<result>660</result>