A calculator usually lets you do one calculation after the other for each of which it gives you a single result.
Hypatia can do that, but it can also do a lot more.
HY, Silent Mode and Accumulation Mode: The Result File hy, Silent Mode, Accumulation Mode, Line Breaks in hy.
Result Commands: $ and hy, Result Control Codes, Result Commands.
The Result Buffer: What is the Result Buffer?, Buffer Commands, Using the Buffer.