YOU SAID:
today i will clean my room togheter with my friend
INTO JAPANESE
今日は友達と一緒に部屋の掃除をします
BACK INTO ENGLISH
I will clean the room with my friends today
INTO JAPANESE
今日は友達と部屋を掃除します
BACK INTO ENGLISH
I will clean the room with my friends today
That didn't even make that much sense in English.