It means an average of 7.7M copies per album. It's clearly impossible. You've to reflect guys before posting... This is obviously shipments + inflating numbers.
Did them all in my head but they look about right for a site that's missing some Asian countries. Slay, girls
"We monitoring not only 25 countries and the sales estimates from our post based on all countries"
This is a comment from Mediatraffic on their Facebook page.