Cantonese, English and Mandarin, ordered by confidence.
I sometimes feel special for being a Hongkonger who speaks Cantonese and writes Traditional Chinese, as they are not very common.
I feel that extremely when people think that I'm an American and accuse me of thinking "dollar" is the only currency unit in the world. (Sorry for the rant)
EDIT: Getting downvoted for no reason because people think I'm assuming everyone is US. No. There are other places in the world that uses "dollar" as a unit of currency. I live in Hong Kong, and we use Hong Kong Dollars (HKD), and our 2 dollar coins are flower-shaped.
For everyone who don't know, this is the complicated version of Chinese numbers. In modern days, they are mostly used in writing cheques, because these characters are not as easily modified as the simple version.
Of course it's wetdry.world. I love this instance.