This is the 10585th most frequent Polish word.
dodaniem
"Dodaniem" means "by adding" or "with the addition of" in English.
In this sentence, 'dodaniem' is used in the instrumental case as a means by which the project was developed.
Rozwinąłem projekt przez dodaniem nowych funkcji.
I enhanced the project by adding new features.
Here, 'dodaniem' expresses the action of adding as the means of surprising everyone.
Zaskoczyłem wszystkich dodaniem szczegółowych danych.
I surprised everyone by adding detailed data.
In this example, 'dodaniem' indicates a method or action contributing to an improvement in quality.