This is the 6311th most frequent Russian word.
устройством
The Russian word "устройством" translates to "device," "arrangement," or "system," depending on the context.
The word "устройством" refers to a tool or device that we use daily. It appears in instrumental case indicating its function in the sentence.
Мы пользуемся этим устройством каждый день.
We use this device every day.
"устройством" here again references a device and appears in instrumental case, showing how it's being interacted with.
Он изучает инструкции по пользованию устройством.
He is studying the instructions on using the device.
In this context, "устройством" signifies the object of interaction (a device), and it is still in instrumental case, emphasizing the means of engagement in the activity.