Conversation so far:
when was the band Day26 formed?
in August 2007.
What does the band name Day26 mean?
The name Day 26 was selected from the day that Day26 were picked.
What were some Day26 popular songs?
Exclusive (No excuses),Got Me Going and Since You've Been Gone“
Did the band day26 have any number one hits?
Day26's self-titled album Day26 debuted at #1 on Billboard 200.

Question: how many copies did their first album sell?
Self-contained rewrite: how many copies did their first album Day26 sell after its debut at #1 on billboard 200?