Create a def named $`$gcd$`$ that will take two numbers, and returns the GCD of those numbers.

Create a def called $`$main$`$ that calls the def $`$gcd$`$ four times and print out the results for the pairs $(12,18),(32424,87687),(12377,123),$ and $(169,26).$

Call $`$main$`$ at the bottom of your code to start the program.