How to calculate Voltage and Current?
You are looking at a bad datasheet. Try this one:

http://www.bg-electronics.de/datenblaetter/Schaltkreise/S1117-XXPI.pdf

You are trying to use the schematic for the adjustable regulator when you are actually using a fixed 3.3volt regulator. The datasheet that you linked to has those figures incorrect. You don't need any resistors at all.

(wow, that's the third time in a row that I've been beat by a minute.)