How is the order of operation used in everyday life other than in a math class or at school? Also .... Can you give me a list of all the mathematician that are still living that uses the order of operation? 

Hi, All mathematicians use the order of operation in their work and in their everyday lives. So does every other person I know while dressing up in the morning: Try the following operations:
reverting the order in which they should really be done. A more scientific example is the encryption and authentification operations used in the everyday exchange of confidential information on the world wide web. How about a shopping example. The store has a 10% discount on the ticket price of all items. You buy three items and go to the cashier. The cashier enters the three prices, finds a total, and then applies the 10% discount.
Claude 

