Foil stuck to bottom of oven - Kenmore 47783 Electric Single Oven

It says right in the owner's manual not to use aluminum foil on the bottom of the oven. Try to remove it with steel wool...

The foil can actually melt when exposed to the heat of the oven elements, so getting it off may be a real challenge as it could be bonded to the inside oven finish and it's best not to damage that.
I would try soaking it in oven cleaner and carefully continue to try to scrape it off.
Don't forget to follow the instructions on the cleaning container as it can be very caustic.

it most likely cant it fuse to the liner.y

How would I remove aluminum foil stuck to the bottom of a convection oven?

See this link: http://askruth.blogspot.com/2006/07/cleaning-baked-on-foil-in-oven-help.html

"I called Sears and this is what they said to do:

BE CAREFUL, remove as much of the foil as possible Turn oven on to 200 lay an old wet bath towel on top. Use a plastic spatular to remove the foil.

They said it will take some time to remove the foil, in some cases days, and that you can still use the oven but DO NOT use the self cleaning untill all the foil is removed."

If you can remove the bottom drip tray/pan from your oven which the tinfoil is stuck to, than remove it. Ovens with "hidden element" usually have the removable bottom tray/pan. Don't scrape yet!!
Lay the tinfoil laden tray on a flat service where it wont be disturbed for a couple of days.
Now remove any tinfoil you can with a plastic scraper/spatula/pancake flipper.
Once thats done, pour bleach directly onto the drip tray/pan until it covers all the stuck tinfoil.(assuming your oven pan is like mine and has a lip all the way around and is somewhat countersunk).
Leave the bleach in for about 2 days. Now get your plastic scraper again and scrape away. The stuck tinfoil should all be dissolved by the bleach and the scraper should get rid of any residue. Then rinse!
Now this method will probably leave some darkened stains on the oven tray, but not near as ugly or noticeable as that melted tinfoil!!

Good luck!!

You may be able to get it opff with the oven hot. Whatever is holding it was liquid when hot before, so should at least loosen enough for you to remove it.

(Wear a professional n95 mask and rubber gloves). Use a straight razor and scrape off as much foil as possible. Get a hold of Mercuric or sulfuric acid. BE CAREFUL not to spill anywhere, work close to a stainless steal sink. Poor a little in a small glass container and bring over stove porcelain surface. Pour the acid onto the foil and wait 3-4 minutes, use paper towel to wipe off the acid, and then a soapy wet rag. Repeat process until all foil is dissolved. Then wash surface thoroughly and repeatedly with a soapy dish towel. Once complete run water in the sink for 5 minutes till any possible remaining accid is flushed from the sink. The foil is gone and the porcelain is preserved. Works great! (Don't breathe the fumes and ventelate the area or move the stove outside)

Unfortunately, it's too late. The tin foil has melted into the panel and can't be removed. The melted foil will not affect oven operation. You should never place anything on the bottom of a stove that has a hidden element. You will damage the panel. The only option you have is to replace the panel (if replaceable) or the entire oven liner...

if not a lot of foil get that easy off thats made for self cleaning ovens soak it let it sit then wipe make sure you get the one that says safe for silf cleaning dont scrape soak then after wipping off run self clean