316008 makes 800613 (boogie
How Can I Make A Calculator Spell Booger?
Unless your calculator has special functions, 'r' isn't produced by a digit on the calculator, but you can read "boogie" if you enter 319008 and invert the device.
136008
Maybe you're thinking of what the display looks like when you enter 236009 and turn it upside down?
You can't