и дело с концом

тж. и делу конец

разг.

and that's that; and there's an end to it all; and that puts the lid on it; and be done with it

Может быть, в другое время и при других обстоятельствах всё обошлось бы без особого шума. Просто приказал бы председатель свезти снопы обратно на ригу, постыдил бы немного Тятюшкина - и дело с концом. (С. Антонов, Дело было в Пенькове) — Perhaps under different circumstances and at another time the matter would have been settled peacefully. The chairman would have simply ordered the flax to be taken back to the threshing floor, Tyatushkin would have received a mild scolding, and that would have been that.

- Бред! - заключил Матвей Касьяныч, сворачивая свиток. - Бред сумасшедшего. В архив - и делу конец. (Л. Лагин, Старик Хоттабыч) — 'Ravings!' the director said, rolling up the scroll. 'The ravings of a madman. Stick it away in the file and be done with it.'