I love calculus and stats. It's such a pity that I don't get to use them at work, but it's good to have the ability to use them. And keep trying hard beating anxiety and depression! No one can help you with this sort of battle except you. If you haven't read The Alchemist, I highly recommend this book.
Hey, I'm sorry to hear that you're enduring this terrible situation. I was in your shoes a year ago, except that for me I didn't enjoy my personal life (bad relationships, no real friends, away from home, etc.) but was okay with my job (much younger than the rest, good salary). In my case, I ended up leaving my great paying job to return home. Life is much better now, but my current job is paying much less. It's still enough for me, but I can't single-handedly support my family anymore.
In your case, your commute is way too long but there are some ways to spend away the time such as sleep, read books, listen to podcasts, or even call to check on people. In workplace, if you enjoy your job, just ignore other employees and focus on your job. That would be best. Take their presence as a pinch of salt. Only communicate with them if needed. In the end not many co-workers will become your friend, and haters gonna hate.
If you are new to this job, try to cope with this for like a year or two, just to save up some money. For me, after quitting my job, I realized there ain't many companies that are willing to pay good money and also offer so many benefits as my previous employer.
However, if you feel like this workplace situation is killing you, get out asap. In the end having a lot of money is nice but it's not everything in life.
Hope all goes well. Happy new year mate