English, Farsi, Italian, and I understand a little Spanish from Italian. I can read/write/speak English and Italian. (A little Spanish). I can speak Farsi. (I used an English to Farsi translator). Hello. سÙاÙ... Ciao! Hola!
I am fluent in English and currently learning Spanish in classes and Russian and German in my own time. I have also tried learning a little bit of Swedish, Danish, Norwegian, and Dutch but that didn't really work out. Recently I have started looking into Esperanto and Italian.
What do you mean by how many do we know? Like fluently? Or basic understanding (being able to read it)?
English, of course I can translate German fairly well..and know some random stuff (can count to 99..?) I can count to about 99 in Japanese...? And say hello when on the phone (as well as a few words/phrases that mostly everyone knows) I can translate Latin fairly well (and count to 99..)
Sadly, I only know English. I have really basic French, a tiny bit of Spanish and can kind of follow a Dutch conversation, although I can speak almost nothing of the language. I want to learn all 3 of those though!