Dear Recently Divorced,
You can and will get through this. There are online math tutors who can video chat with the kids, there are lots of online math sites that the kids can probably find; if not, the math teacher can recommend some to you.
Home repairs can be hired out, or you can look up just about anything on you-tube. I was not handy around the house, but even managed to install a new toilet by myself! First, go buy yourself a simple tool kit from your local store like Walmart or Home Depot. That will be a great start.
I used to cry everytime I hit another snag in the "fix-it" department. I would get so angry at my ex. But it was still easier than living with a narcissist!
Just take one day at a time for now. It takes awhile for everything to fall into place.
I have been divorced for 10 years, from the second one, and still have a 16 year old at home at age 58. I am very grateful to have the kids near me as my grown ones live in the same town.
If you get overwhelmed, make a list of things that are bugging you or repairs that need to get done. Keep that list for a couple years and write down dates that each thing gets completed. It will boost you down the road to see what you have accompished and how far you've grown.
It will be okay, just different. Hugs to you.