Overloaded Functions

Write overloaded functions called sumEvenNumbers that will sum all of the even numbers that are part of a whole number. For instance the following number:

14216

would return 12 because the even numbers are 4,2,6.

One of these function should take one whole number, the other should take two. One function should return the sum of the even numbers in one whole number, the other should return the sum of the even numbers in two whole numbers.

Please NOTE: Do not convert the whole number to a string to extract the even digits.