Quran Sajdah Question?

There are fifteen, but one school of thought doesn't count one of them. If you recite it while praying, you would do the Sajdah, and raise back up and continue the prayer. When an Imam recites a verse with the Sajdah, he will go down for prostration and go back up and continue the prayer. I am not aware if you are allowed to do it afterwards, but for sure they do it right after reciting the verse.