[LordShredda]

There used to be an actual Microsoft math solver, kind of a school version of Matlab. I don't know if they still offer it on the website, but it would've been useful for me back in school

[strangecasts]

That would be Microsoft Mathematics, the previous version - I think they've removed the download in favor of this, unfortunately :(

[mindcrash]

Archived: https://archive.org/details/msmath4