Complex sentence: It is spoken by around 6.2 million people in India, Bangladesh, Bhutan and Nepal, although most of its speakers live in India, in the states of Jharkhand, Assam, Bihar, Orissa, Tripura, and West Bengal.
Split into simpler sentences: It is spoken by about six million people in India, Bangladesh, Nepal, and Bhutan. Most of its speakers live in India, in the states of Jharkhand, Assam, Bihar, Orissa, Tripura, and West Bengal.