[chacha21]

I share a lot of thoughts with that, and built my own calculator, too A calculator that gives right instead of wrong answers

https://chachatelier.fr/chalk/chalk-home.php

I tried to explain what was going on https://chachatelier.fr/chalk/article/chalk.html, but it's not a very popular topic :-)

[sxldier]

Looks really well done, nice!