how do i get 4010392426 from 314424837
It does not say "how do you take" which is what you have done.
It says "how do you get"
So I don't think that you have quite answered the question.
$${\mathtt{4\,010\,392\,426}}{\mathtt{\,-\,}}{\mathtt{314\,424\,837}} = {\mathtt{3\,695\,967\,589}}$$