$ apt-cache madison calc calc | 2.12.7.2-4 | http://10.108.201.140/ubuntu/mirror/archive.ubuntu.com/ubuntu focal/universe amd64 Packages calc | 2.10.18-dfsg-2build1 | http://archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages
500 http://cm.archive.ubuntu.com/ubuntu xenial/multiverse amd64 Packages
ref:
https://linuxopsys.com/topics/install-specific-version-package-apt