Google:
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Yandex:
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DeepL:
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Use whatever you want from these or others. There are more translator websites, these are just the most well known.
Upload document.
Hit translate.
Download translated document.
You used a machine to translate a document.
Machine Translation
MTL
MTL is not a specific action you do or place you translate.
It is a wide term for translations of whole texts by a translation application without human intervention.
Easy enough for you to understand now?