A standard football field is 110 meters long and 75 meters wide. The Forbidden City in Beijing covers an area roughly equivalent to 90 standard football fields. How many square meters does the Forbidden City cover?
一个标准足球场的长为110米，宽为75米．北京故宫占地面积大约相当于90个标准足球场那么大．故宫占地面积大约是多少平方米？
<result>732_500</result>