In hindi मेहनत means hard work
To me it seems like this sentence means that "Peter does work". Wondering how we would know from this sentence that peter works hard?
मेहनत means something close to 'hard work'. So, the literal translation is 'Peter does hard work'='Peter works hard'.
As milkixmochi says, 'Peter does work' is "पीटर काम करता है" where काम is 'work'.
If it was peter does work , it would've been "पीटर काम करता है " but its peter works "hard" . Due to the input of that word its being said as "मेहनत"
There is no does in it that's why