Complex sentence: Furby sold 1.8 million units in 1998,14 million units in 1999, and altogether in its three years of original production, Furby sold over 40 million units, and its speaking capabilities were translated into 24 languages.
Split into simpler sentences: Furby sold 1.8 million units in 1998, and 14 million units in 1999. Altogether in its three years of original production, over 40 million units were sold, and its speaking capabilities were translated into 24 languages.