Complex sentence: The video entered BET's 106 & Park countdown on February 23,2009 at number 10, so far it has remained on the countdown for 14 days, peaking at number 2.
Split into simpler sentences: The video entered BET's 106 & Park countdown on February 23,2009 at number 10. The song has remained on the countdown for 14 days, peaking at number 2.