Hope you are already back by now and settling in to new routines.
When you get in the door, put away coats etc immediately. Go through schoolbags for homework to be completed (assuming they do some in childcare afterschool - otherwise to start straight away), and any notes from school, party invites etc.
You, while supervising homework with 1 eye, turn on pots etc for dinner.
Everyone helps - so clearing table and setting it for dinner are jobs that 4 and 7 year olds can do together (or alternate nights). And the same with clearing up. If need be, star charts with a "family time" reward at the weekends can help with them doing chores.
Try to keep them in the room with you if possible, while you work on getting dinner and they do homework and help you and chat through your day together.
I tend to leave certain chores until they are doing bed - washing up (I clear the table and stack dishwasher as we finish dinner, but leave washing of pots etc), making school and work lunches and prepping tomorrow's dinner. Meanwhile, our 6 yr old does "wees and teeth", may need help getting changed (so I pop up and get out tomorrow's clothes, and can offer a hand if need be and also encourage keeping moving), and then she gets 20 minutes to read to herself, do a maths sheet (her choice!) or some colouring in, before DH or I go back up to read her bedtime story. Between the few minutes at the start and that 20 minutes (and story time if I'm not reading), I can get the kitchen sorted and maybe some laundry or another small job.
I always sort dinner the night before too. If a sauce needs to be cooked, I do that so it's only reheating that and boiling pasta/rice/potatoes next day. Peel veg and potatoes and leave those in water in pots ready to cook. Take out previously made and frozen sauce (spag bol, curry etc) from freezer, or meat/fish if need be. That sort of thing. I can set the oven to turn itself on and off, so I'd often have an oven dinner that is hot when we get in, or sometimes make sure the oven is hot already to throw in chicken kievs or battered fish and oven chips etc.
I can also set my washing machine on a timer, which does help. I tend to sort out a load most nights at DD's bedtime (maybe while she is in bathroom a couple of step away) but set it to run in the afternoon so it is ready to put on the line outside/clothes horse indoors/tumble dryer when we get in. So then it only takes a couple of minutes (and DD can help). Dry clothes get thrown into a "clean" basket, which DH and/or I sort and fold on Sat evening while sitting with DD watching a movie (she often helps a bit). DH does the ironing on Sunday evenings while I am either making or clearing up after the roast dinner. (I usually make a double batch of a dinner for Monday and freeze the other half on Sunday evening while sorting the roast).
Definitely leave all clothes out the night before (for all family members) and make lunches then too. Make sure all bags are sorted (gym gear, any after school activities or evening activities like book club, scouts, sports etc - sort the night before) and left together in the same place. Make sure coats/boots/scarves etc are all easily located (depending on relevant weather needs and to allow for changes).
I tend to do most of the heavy cleaning at weekends - blitz it for an hour with DH to get the main cleaning done (bathroom, dusting, hoovering etc), while I sweep the kitchen floor most nights and when I do mop, it tends to be a quieter mid-week night or as we go out somewhere at the weekend (so it's dry when we get home).