Maybe they were actually taught how to do division without using a calculator. Long division is something kids used to be expected to have mastered by the age of 8, not something that requires a computer.1960papereyes They would have had calculators. Mechanical ones, for a start, and I've seen photos of banks of women at an aeronautical lab employed simply to do sums
I might be wrong, but sums is the word. I'm not sure these mechanical jobbies could divide.