YOU SAID:
how long do you think we could make it?
INTO JAPANESE
どれくらいで行けると思いますか?
BACK INTO ENGLISH
How long do you think it will take?
INTO JAPANESE
どれくらい時間がかかると思いますか?
BACK INTO ENGLISH
How long do you think it will take?
That didn't even make that much sense in English.