Complex sentence: It was the first Beatles album to officially enter the "Billboard" 200 album chart straight at number 1 with 855,473 copies sold, making the 27th largest one-week sales in the Soundscan history, succeeding "Fresh Horses" by Garth Brooks.
Split into simpler sentences: It was the first Beatles album to enter the "Billboard" 200 album chart at No.1. It sold 855,473 copies in its first week, the 27th largest one-week sales in the Soundscan history, succeeding "Fresh Horses" by Garth Brooks.