YOU SAID:

I've been hopeless for 80 years and i will be hopeless for 80 years prior

INTO JAPANESE

私は80年間絶望的であり、私は80年前に絶望的になります

BACK INTO ENGLISH

I have been desperate for 80 years and I will be hopeless 80 years ago

INTO JAPANESE

私は80年間必死で、私は80年前に絶望的になります

BACK INTO ENGLISH

I have been desperate for 80 years and I will be hopeless 80 years ago