How to copy selected faces and extract them?

Good day, guys!

I need some advice… How can I extract selected faces, but also keep them at original mesh? If I press “P” and use “selection” faces will be extracted from mesh as a new object and original mesh will loose that faces. That’s not what I want. I want to copy selected faces by extracting them. Is it possible?

Thanks!

Shift + D, then P.