I was pretty famous in college for getting the problems right on exams while I was working symbolically, and right before the final answer failing at integer division or subtraction. Professors/TAs would still give you full credit though, maybe penalize you a point or something.

In a group, you’d usually let the freshest handle splitting the bill because everyone else forgot arithmetic.

it might take a while but their answer would always be correct. the same cannot be said for LLMs.