Checking whether all files were extracted correctly

I have a bunch of large zip files on a Synology. The Synology built-in extractor is a bit fiddly, and I'd like to check whether the files were extracted correctly using the commandline. Installed is 7z, and the "standard" Linux tools. What are some methods I can make sure the files were all extracted correctly? I've tried asking GPT for some answers, but it only told me that I use -t to test whether the files *inside* the zip aren't corrupted. The 7z manual also didn't look like it supported this out of the box, or I missed it, which is totally possible. Obviously, I searched the internet and StackOverflow as well.