But, I did make an interactive tutorial here: https://docs.ycombinator.lol/
If you have any questions about it, I'd be happy to answer. This stuff is pure fun mixed with a shot of professionalism.
For what it's worth, as someone with narcolepsy, I relate quite a lot to your chronic pain. (https://twitter.com/theshawwn/status/1392213804684038150) For me, it mostly translated into wandering aimlessly from job to job, since I thought no one would have me. I hope that you find your way -- there's nothing wrong at all with taking it slow and spending years on something that takes others a few months. Everyone is different, and it's all about the fun.
It evaluates to -500000, as you’d expect.
(Just kidding, it’s -50000. Amusingly, the https://docs.ycombinator.lol version gets it right, since it has to; every expression is actually evaluated in the browser.)
I keep trying to get into Lisp (and JavaScript, and TypeScript, etc etc) but I've been a sysadmin my whole professional life and also a chronic pain sufferer. That translates into mostly having energy only for work and that's it, not much motivation to learn after work or on the weekend.
In my DevOps job, I write Terraform, plus read javascript and cloudformation yaml. I do wish I could convert my current stuff to AWS CDK, but I don't want to fragment the multiple projects that are using Terraform. (I haven't looked into tf-cdk much at all yet)