Complex sentence: Following the release of "The 20/20 Experience", due to strong digital downloads, it reached number 15 on the South Korean singles chart, number 64 on the US "Billboard" Hot 100 chart, and at number 20 on the UK R&B Chart.
Split into simpler sentences: Following the release of "The 20/20 Experience", due to strong digital downloads, it appeared on the charts in South Korea, the United Kingdom and the United States. It additionally peaked at number 64 on the US "Billboard" Hot 100 chart and at number 20 on the UK R&B Chart.