The area of the school's legal safety bulletin board is about 8 square meters and 9 square decimeters, which can also be expressed as how many square meters.
学校的法制安全宣传栏的面积大约是8平方米9平方分米，也可以表示为多少平方米．
<gadget id="calculator">9 / 100</gadget>
<output>9/100 = around 0.09</output>

<gadget id="calculator">8 + (9/100)</gadget>
<output>809/100 = around 8.09</output>

<result>809/100 = around 8.09</result>