# [///](http://esolangs.org/wiki////) and [Retina](https://github.com/mbuettner/retina), 95 + 3 = 98 bytes

    /
    //
    
    This program wasn't written in \/\/\/, it was built for Retina!
    /?./....(.*)(R.*)!
    $2$1///!

+3 bytes for the `-s` flag in Retina. I'll add an explanation after I've checked whether a different approach might be shorter.