How old are you?

When I was much younger, I worked as a cashier in a grocery store. All the items were marked with the price. 3/$1.00, 9/$1.00, etc. Customer would purchase 1 each of many items,, and we would have to do the math in our heads while carrying on a conversation with the customer. Then had to give the correct change from the amount tendered.
Can you imagine young people doing that, today?

Another time I went to "adult" night school, to become a tool and die maker. Two years of night school to learn "theory" and "on the job" training during the day About 15 students (all adults). First night instructor gave a test to get an idea of what each person knew. Being in a tool and die class you used geometry and trig. Half the students could barely add and subtract, much less multiply and divide. Instructor had to waste about 3 weeks teaching basic arithmetic.