Get lat and lng based on my position from android phone

I feel myself so lame, because what I want, it seems so obvious, but for me, it's not.

I am developing a game in my city, where I want to place some NFC tags, and players need to visit these places. I want to give them the exact lat and lng coordinates. And I am stuck at here.

I opened the google map application in my phone, and my location is shown on the map, but I just cant see anywhere these informations. I tried to do it in a browser, but the same situation.

Can somebody guide me, how can I get the coordiantes of my position?

I tried to save it into a google drive, but there is only a document only with a link, what show me the map, but not the requested informations.

Thanks, and sorry, if this is too lame.

Ps: that would be awesome, if somehow I could save it directly to my phone, because I need to place 50 tags, that would be hard to write it down, and then write back into the computer.