that ought to do it

( همین کار، اندازه یا مقدار ) باید کافی باشه، باید جواب بده، باید کار کنه
"That ought to do it" is a colloquial expression meaning that whatever action or task has just been completed is considered sufficient or satisfactory. It implies that there is no need for further action or adjustment.

used to say that you will have finished doing something if you just do one more thing:
مورد استقاده:
وقتی با این کاری که داری میکنی دیگه کارت تموم شه !
( اینم از این ) . . . دیگه تموم شد!/درست شد !