That sounds so interesting! I hope that you had fun at the museum. I have attached some small corrections below. What do you do if you need to do big calculus and you need results quickly? Use a big computer? Last (Latest) model? Obiusly (Obviously***) not people, usually, scientist use supercomputers when (they) need to do simulations or they need results quickly. Today I have visited Barcelona Supercomputing Center. I share with everybody the pictures ( You can also say- **Here are some photos **): Note: supercomputer is inside a chapel.