Official 1st week sales for Finally - 1,113,291
http://tieba.baidu.com/p/5432360237?pn=2
Also , to add on regarding what S4MU3L commented , Oricon wrote that Namie is the 1st artiste in Japan music history to sell a million copies of her releases in her teens , 20s , 30s & now 40s
https://www.oricon.co.jp/news/210058...?ref_cd=tw_pic
Namie albums that sold more than a million copies each
10代／『DANCE TRACKS VOL.1』（1995年）
『SWEET 19 BLUES』（1996年）
『Concentration20』（1997年）
20代／『181920』（1998年）
30代／『BEST FICTION』（2008年）
40代／『Finally』（2017年）