interestingasfuck

If we are being pedantic, technically you should use a space to separate the thousands (e.g. $27 000), as this avoids the ambiguity.

If we ignore that and only focus on comma (,) and period (.) decimal notations, then period for decimals would win out, as the larger majority of the world population use it. So $27,000.00 would be the correct way.

But until the whole world agrees on one, we are stuck with multiple, so you can just rub your two brain cells together and realise that the 3 trailing zeroes probably mean it is in the thousands (along with the rest of the context).

(no shade at the original comment, which was clearly tongue in cheek, idk why it is downvoted lol it was funny)