Complex sentence: It became the sixteenth best-selling album of 2015 in South Korea, with sales figures standing at 119,576, and also was named the main contributor of her label's leading music sales during the fourth quarter of 2015.
Split into simpler sentences: It became the sixteenth best-selling album of 2015 in South Korea, with sales figures standing at 119,576. The album was also named the main contributor of her label's leading music sales during the fourth quarter of 2015.