What professions use the scientific part of a scientific calculator?

I used to play with my accountant dad’s scientific calculators, and never used most of the features until grade 12 math.

I don’t have it now, and would wonder what the different functions are for?

For those who don’t know a scientific calculator was the best one had before a graphics calculator, in the 90’s.

I have two Texas Instruments -ti85’s. On of which I bought in 1995 for $169.99, and has the original button battery, and still works.