question: How many more males in the population are from India than Bangladesh and Pakistan?
#1 return males in  the  population 
#2 return #1 that are from  India 
#3 return #1 that are from  Bangladesh 
#4 return #1 that are from  Pakistan 
#5 return number of  #2 
#6 return number of  #3 
#7 return number of  #4 
#8 return sum of #6 and  #7 
#9 return the  difference of #5 and  #8