YOU SAID:

Hello my friend how are you doing.

INTO JAPANESE

やあ。どうしてる。

BACK INTO ENGLISH

Hi. How are you doing.

INTO JAPANESE

いかがお過ごしですか？

BACK INTO ENGLISH

How are you keeping?

INTO JAPANESE

いかがお過ごしでしょうか？

BACK INTO ENGLISH

How are you keeping?