Complex sentence: Despite being released on Macklemore's independent label, with distribution by ADA, the single was a sleeper hit, with unexpected commercial success, peaking at number one on the "Billboard" Hot 100, while selling 7 million copies in total.
Split into simpler sentences: Despite being released on Macklemore's independent label with distribution by ADA, the single was a sleeper hit. It peaked at number one on the "Billboard" Hot 100 while selling 7 million copies in total.