To a stack, add the following list of numbers. Using a loop, pop each number print the number and finally, find the arithmetic mean $($average$)$ of the numbers.

Note: use the properties available in stack to determine the number of integers in the stack.

Number List: $11,19,23,25,27,31,41,43,45,51,58,61,64,70,72,74,76,78,79,127,129,231,321,411,412,421,431,441,641$

In C#