This is the 11454th most frequent Russian word.
доделать
"To finish" or "to complete."
In this sentence, 'доделать' indicates completing an already started project within the deadline.
Мне нужно доделать проект до завтра.
I need to finish the project by tomorrow.
Here, 'доделать' refers to finishing incomplete work that had been previously attempted.
Он вспомнил, что забыл доделать отчет.
He remembered that he forgot to finish the report.
In this example, 'доделать' describes bringing ongoing renovations to their completion.