YOU SAID:

what is i going to do

INTO JAPANESE

私はやるんです。

BACK INTO ENGLISH

I do it.

INTO JAPANESE

私はそれを行います。

BACK INTO ENGLISH

I will do it.

INTO JAPANESE

やっちゃうぞ！

BACK INTO ENGLISH

I will do it!

INTO JAPANESE

やっちゃうぞ！

BACK INTO ENGLISH

I will do it!