Question: Extract the answer to the question from the following context. Question: Where are there significant portions of workers? Context: The provisional results of the 2014 Myanmar Census show that the total population is 51,419,420. This figure includes an estimated 1,206,353 persons in parts of northern Rakhine State, Kachin State and Kayin State who were not counted. People who were out of the country at the time of the census are not included in these figures. There are over 600,000 registered migrant workers from Myanmar in Thailand, and millions more work illegally. Burmese migrant workers account for 80% of Thailand's migrant workers. Population density is 76 per square kilometre (200/sq mi), among the lowest in Southeast Asia.
Answer:
over 600,000 registered migrant workers from Myanmar in Thailand, and millions more work illegally