Terms for subject Business containing The head of the

English	Russian
department of the head office	отдел главной конторы
have the idea off the top of one's head	сказать навскидку
Head of the Market	Глава рыночного отдела (Sloneno4eg)
off the top of one's head	не задумываясь
off the top of one's head	навскидку