This is the 16320th most frequent Turkish word.
yapıldığının
"Of its being done" or "that it is done."
The word 'yapıldığının' is used here to indicate the passive form 'was done' related to 'project'.
Bu projenin ne kadar özenle yapıldığının farkına vardık.
We realized how carefully this project was done.
The word 'yapıldığının' means 'was cooked' and refers to the food.
Yemeğin yapıldığının kokusundan anlaşıldığını biliyorum.
I know it is understood from the smell that the food was cooked.
Here, 'yapıldığının' indicates the completion of renovation works in the passive form.