Edited

1f = one female
x 2 times 2 children birth rate

1f comes to town total new people 1
1f x 2= 2 total new people 2
1f x 2= 2 total new people 2
1f x 2= 2 total new people 2
1f x 2= 2 total new people 2
1f x 2= 2 total new people 2
add up the total you get 1 female turning into 11 people at the end of 5 generations or 100 years assuming everybody is still alive.

so if the one female is represented by 10 million females (estimates are 20 to 40 million illegal aliens) ,and the above pattern is true at the end of 100 years you will have an additional 110 million but if the females have 3,4 or 7 children the numbers become ASTRONOMICAL. This doesnt include chain migration or additional immigration.
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