Complex sentence: In May 2009 NASCAR and iRacing.com announced a five-year deal of an online NASCAR-sanctioned racing series and on February 13,2015 iRacing.com announce a six-year extension to their agreement.
Split into simpler sentences: In May 2009 NASCAR and iRacing.com announced a five-year deal of an online NASCAR-sanctioned racing series. On February 13,2015 iRacing.com announce a six-year extension to their agreement.