In so-called post-editing, a text which has undergone machine translation, i.e. which has been created without the intervention of a human translator, is corrected in full by a qualified translator.
Some organisations use machine translation when large volumes of text have to be translated within a short period. Even using modern, professional systems the result of such a process is not of publishable quality, but it is nevertheless understandable. Especially with regard to the processing time required, in some circumstances it can therefore be worth processing a text in this way, and then having it modified by a qualified translator.
I do not use machine translation myself, but as part of my correction and proofreading services, I offer the adaptation of machine translations. A prerequisite for this is that the machine-translated text is of a usable quality. If you require such a text to be corrected, then simply send it to me for review. I will then inform you of my assessment.