What is the total number of Afro-Asian people in the most populous Asian country governed by a monarchy?
Total Number of People = Percentage * Population
SELECT T5.Percentage * T6.Population FROM ethnicGroup AS T5 INNER JOIN country AS T6 ON T5.Country = T6.Code WHERE Country = ( SELECT T3.Code FROM continent AS T1 INNER JOIN encompasses AS T2 ON T1.Name = T2.Continent INNER JOIN country AS T3 ON T3.Code = T2.Country INNER JOIN politics AS T4 ON T4.Country = T3.Code WHERE T4.Government = 'monarchy' AND T1.Name = 'Asia' ORDER BY T3.Population DESC LIMIT 1 ) AND T5.Name = 'Afro-Asian'