When you're a getting a lot of coordinates and need the functionality provided by Google Maps, you can right click on the map position you need and choose the "What's here?" option. This displays a card in the bottom on the page, containing the coordinates. But there are have a link and are pretty difficult to select to copy them. So when that box is shown, you just need to click the copy icon in the address bar and the coordinates will be in the clipboard. :D
