YOU SAID:
what an ityit who didnt decided to save 3,000 yen
INTO JAPANESE
なんと3000円節約しようと決心しなかった
BACK INTO ENGLISH
I didn't decide to save 3000 yen
INTO JAPANESE
3000円節約することにしなかった
BACK INTO ENGLISH
I didn't decide to save 3000 yen
That didn't even make that much sense in English.