YOU SAID:
Hello, how are you doing on this fine day?
INTO JAPANESE
こんにちは、この晴れた日にどうしていますか?
BACK INTO ENGLISH
Hello, what are you doing on this sunny day?
INTO JAPANESE
こんにちは、この晴れた日に何をしていますか?
BACK INTO ENGLISH
Hello, what are you doing on this sunny day?
That didn't even make that much sense in English.