Original sentence: Relativistic kinetic energy affects everyday life because, although relativistic changes in mass are relatively tiny, these changes in mass result in large changes in energy due to  where  is about 90,000,000,000,000,000  (see note 5)
Edited sentence: Relativistic kinetic energy affects everyday life because, although relativistic changes in mass are relatively tiny, these changes in mass result in large changes in energy due to  where  is about 90,000,000,000,000,000