YOU SAID:
How long have you known?
INTO JAPANESE
あなたはどのくらい知られているか。
BACK INTO ENGLISH
You have known how long?
INTO JAPANESE
あなたはどのくらい知っているか。
BACK INTO ENGLISH
You know how much?
INTO JAPANESE
あなたはどのくらい知っていますか。
BACK INTO ENGLISH
You know how much?
Okay, I get it, you like Translation Party.