YOU SAID:
your grandfather owes you a dollar
INTO JAPANESE
あなたの祖父はあなたに1ドルを負う
BACK INTO ENGLISH
Your grandfather incurs a dollar to you
INTO JAPANESE
あなたの祖父はあなたに1ドルを被ります
BACK INTO ENGLISH
Your grandfather costs you a dollar
INTO JAPANESE
あなたの祖父はあなたに1ドルかかります
BACK INTO ENGLISH
Your grandfather costs you a dollar
That didn't even make that much sense in English.