Did you just make up that number? The official Russian statistics report only 6 million total foreign residents, which includes some 4 million migrant workers from Central Asia, and annual immigration of only 200,000, mostly from other former Soviet countries. Russia is not a top immigration destination.
According to Statista, immigration to Russia has been over 4 million a year since 2012. Also, immigration has been greater than emmigration for a net gain of 2.25 million since 2012.
https://www.statista.com/statistics/1009483/emigration-and-immigration-russia/