YOU SAID:

i dont understand the problem

INTO JAPANESE

私は問題を理解していない

BACK INTO ENGLISH

I don't understand the problem

INTO JAPANESE

分からないな 何が問題？

BACK INTO ENGLISH

I don't understand. What's the problem?

INTO JAPANESE

分からないな 何が問題？

BACK INTO ENGLISH

I don't understand. What's the problem?