YOU SAID:
I have twenty grapefruits
INTO JAPANESE
私は20個のグレープフルーツを持っています
BACK INTO ENGLISH
I have 20 grapefruits
INTO JAPANESE
グレープフルーツが20個あります
BACK INTO ENGLISH
There are 20 grapefruits
INTO JAPANESE
グレープフルーツは20個あります
BACK INTO ENGLISH
There are 20 grapefruits
You've done this before, haven't you.