Given the following information about a US telephone touchtone keypad:
1: (NONE) 2: A,B,C 3: D,E,F
4: G,H,I 5: J,K,L 6: M,N,O
7: P,R,S 8: T,U,V 9: W,X,Y, Z
calculate the product of each characters value.
As an example, say the user enters: "Practice", the product would be:
7 * 7 * 2 * 2 * 8 * 4 * 2 * 3 = 37,632
What is the value of this string: "Programming Challenges are fun"?
