How to count numbers.

ENGLISH

THAI
one ning
two song
three sarm
four see
five hah
six hok
seven jed
eight pad
nine kow
en sib
eleven sib-ed
twelve sib-song
thirteen sib-sarm
fourteen sib-see
fifteen sib-hah
sixteen sib-hock
seventeen sib-jed
eighteen sib-pad
nineteen sib-kow
twenty yee-sid
thirty sarm-sib
forty see-sib
fifty hah-sib
sixty hock-sib
seventy jed-sib
eighty pad-sib
ninety kow-sib
one hundred ning roy
one thousand ning pan
ten thousand ning hmin
one hundred thousand ning san
one million ning larn

The words "sib" is a unit of "ten or teen" and "roy" is unit of "hundred".

How much is the price?             Ra-kah tow rai?

The price is fifteen baht.            Ra-kah sib baht.