A Dou was born in the year 207 AD

Bagua, one coin one 'country', one coin one 'world', A Dou establishes the country, the national currency ADOU, full name, A Dou Free United Kingdom, the territory is located on the Sol public chain planet, on the same planet as $Trump, 😀 National Road entrance, Binance Wallet DEX, zero tariffs, all kinds of losers are welcome to join Douguo. Question: Why is the total amount of Douguo's national currency 20.7 million coins? Hint: A Dou was born in the year 207 AD / In the year 207 AD, Rome declined while Ancient Shu thrived / Douguo has 207 brave warriors / Douguo has 207 thousand households 😀