YOU SAID:

I've been super busy with work, I worked all hours today just for one issue.

INTO JAPANESE

私は仕事で忙しくて、今日は1つの問題のためだけに何時間も働きました。

BACK INTO ENGLISH

I was busy with work and worked for hours today just for one problem.

INTO JAPANESE

私は仕事で忙しく、1つの問題のためだけに今日何時間も働きました。

BACK INTO ENGLISH

I was busy at work and worked for hours today just for one problem.

INTO JAPANESE

私は仕事で忙しく、1つの問題のために今日何時間も働きました。

BACK INTO ENGLISH

I was busy at work and worked for hours today for one problem.

INTO JAPANESE

私は仕事で忙しく、1つの問題のために今日何時間も働きました。

BACK INTO ENGLISH

I was busy at work and worked for hours today for one problem.