A brain - and it is not a simple device.
It was assisted by an abacus, but without a brain an abacus would not have been much use!
No
Yes you can. You can create queries that do calculations. You can write code for programs to do calculations in a database. Doing calculations is a significant element of what you do with a database, so yes you can do them within a database.
No, it is not.
Yes. A graphing calculator has lots of options for mathematical calculations, but in addition, it has a relatively large screen, and options to graph functions.
Some curves are easier to describe and perform calculations on if using parametric equations
Formulas are mathematical instructions that perform calculations.
All legal Excel calculations.
calculate
The main reason for Excel is to perform calculations.
to perform tedious calculations
mathematics
You can use queries to delete records and queries to perform calculations.
Income tax return calculators perform its calculations just like you would by following the directions from the IRS. However, these calculations are preset and all you need to do is put in your numbers.
The abacus was invented by the ancient Chinese people and was used to perform mostly mathematical calculations. In Japan, even to this day, the abacus is still used for simple calculations. Many people consider the abacus the first "computer" or at least the first calculator.
They could only perform basic calculations.
Numeric
Perform calculations in a spreadsheet.