Please redo all the exercises' readmes, create the translations for them, and make sure they have the new structure.

Exercises: 21-factorial - 30-divisable-binary

Repository: https://github.com/4GeeksAcademy/master-python-programming-exercises

Structure File: https://docs.google.com/document/d/1sGV3OzNXCgZnB1RJlhZKJJ6n8HFRGPRt7IWKg0IrQvs/edit?usp=sharing