I have done this hack and it works.

Manual Step:
-hack tested in ics and jb RR2HD mod version dunno with the paid ver.

-you will need Hex Editor from the Play store

- open hex editor and grant root access, go to
sdcard/Android/Data/com.ea.game.realracing2_row/files/res
or
sdcard/Android/Data/com.ea.game.realracing2_OTD_na/files/res

or similar (it really depends on your version)

-look for the file named events.dat and open it

-you'll see a lot of weird numbers

-press the little arrow at the upper right-hand corner (skip to address) and enter 350

- it will take you to position 00000350 you'll see something like this:

00000350 00 01 00 00 00 01 00 00 ........

change it to this

00000350 00 ff ff ff 00 01 00 00 ......

then save overwrite the file and exit

-open real racing 2, select career and play the first track and finish in LAST place... you'll receive 16+ million points