YOU SAID:

I have been six and a half hours today at the office, buddy.

INTO JAPANESE

私は今日オフィスに6時間半いました、バディ。

BACK INTO ENGLISH

I was in the office for 6 and a half hours today, Buddy.

INTO JAPANESE

今日は6時間半オフィスにいました、バディ。

BACK INTO ENGLISH

I was in the office for six and a half hours today, Buddy.

INTO JAPANESE

今日は6時間半オフィスにいました、バディ。

BACK INTO ENGLISH

I was in the office for six and a half hours today, Buddy.