The Windows 10 assistant has a calculator accessible by keyboard or by voice command.
Windows 10 has a calculator, but you don’t necessarily need it for one-off operations. Just go to the search box, located next to the Start button and type the operation, and the result will appear on the screen in a web calculator, via Microsoft’s Bing search engine.
It is also possible to start the calculator by a voice command, for example by saying “Hey Cortana, how many is 15 times 12”. In addition to basic operations, the module also has more advanced functions, for example to perform trigonometric calculations.
You can also continue operations by clicking on the calculator keys or typing on the keyboard. The calculator even has shortcut keys for sine (s), cosine (c), tangent