I would first like to thank you because it is the simplest and most effective calculator I have found but some improvements need to be added.
1- the miller separator is very important to properly identify and read the numbers and amounts
2- we don't need a keyboard on the interface which hides the web page since we have the keyboard or give us the option to hide it
3- we need the instant result which is displayed by typing
4-We need a small bar which always remains displayed if we click on the web page
thanks

Ágil, versátil y fácil de usar

The buttons don't work

This is a simple calculator, but can you add some form of calculator records past calculations made on it?!?

When you click the buttons on the menu that pops up, it doesn't do anything. You have to type on the keyboard. Which isn't too big of a deal, but it's still annoying not being able to calculate using your mouse.