Numbers from 0 to 19; 20 - 100; to 1,000,000 ; to 1 milliard (1B)
http://modernpersian.com/part_23.htm -- lengthy explanation in English of numbers, fractions, etc. using Farsi script and transliteration for Colloquial and Literary
Mathematician Reza Yahaghi writes a brief transliteration for the numbers 1 to 1,000,000+.