Complex sentence: In 2007 the Indian government stated that there were up to 20 million Bangladeshis living in India illegally, though Samir Guha Roy of the Indian Statistical Institute called these estimates "motivatedly exaggerated".
Split into simpler sentences: In 2007 the Indian government estimated that there were up to 20 million Bangladeshis living in India illegally. However, according to Samir Guha Roy of Indian Statistical Institute, these estimates are "motivatedly exaggerated".