How to write 一部分一部分

one; single; a (article); as soon as; entire; whole; all; throughout; "one" radical in Chinese characters (Kangxi radical 1); also pr. [yāo] for greater clarity when spelling out numbers digit by digit

ministry; department; section; part; division; troops; board; classifier for works of literature, films, machines etc

to divide; to separate; to distribute; to allocate; to distinguish (good and bad); (bound form) branch of (an organization); sub- (as in 局); fraction; one tenth (of certain units); unit of length equivalent to 0.33 cm; minute (unit of time); minute (angular measurement unit); a point (in sports or games); 0.01 yuan (unit of money)