Encrypt the message do not pass go by translating the letters into numbers, applying the given encryption function, and then translating the numbers back into letters.

Suppose we want to encrypt the message "Hello world".

Associate to each letter a number like this:

D=>04

O = >15

N = >14

O = >15

T = >20

P = >16

A = >01

S = >19

S = >19

G = >10

O = >15

Then the encrypted message would be the following:

"0415141520160119191015"