In Russian language, as well as in English, the big number typically writes and pronounced as two or three separated words, that is:
number of hundreds + number of tens + units.
For example:
102 = 100 + 2
(one) hundred -(and) two
СТО-ДВА
STO - DVA
_______________________
112 = 100 + 12
(one) hundred -(and) twelve
СТО-ДВЕНАДЦАТЬ
STO - DVENATSAT`
_______________________
909 = 9 + 100 + 9
nine - hundred - nine
ДЕВЯТЬСОТ-ДЕВЯТЬ
DEVYAT`-SOT - DEVYAT`
_______________________
234 = 200 + 30 + 4
two - hundred - thirty - four
ДВЕСТИ-ТРИДЦАТЬ-ЧЕТЫРЕ
DVESTI - TRITSAT - CHETYRYE
etc