YOU SAID:
i sell cars 50%lower than your mom
INTO JAPANESE
私はあなたのお母さんより50%安く車を売っています
BACK INTO ENGLISH
I sell cars 50% cheaper than your mother.
INTO JAPANESE
私はあなたのお母さんより50%安く車を売っています。
BACK INTO ENGLISH
I sell cars 50% cheaper than your mother.
That didn't even make that much sense in English.