Steam saying I am missing "libc.so.6", even though it is in my libraries folder

Question

I a question like this has been asked before, but none of the solutions I found have worked, and I think my problem is different, because it's more like Steam not detecting the library. Exact error message:

You are missing the following 32-bit libraries, and Steam may not run: libc.so.6

When I try run sudo apt-get install libc6:i386, it returns this:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
libc6:i386 is already the newest version (2.23-0ubuntu3).
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 gcc-5-multilib : Depends: libc6-dev-i386 (>= 2.11) but it is not going to be installed
 libc6-dev-x32 : Depends: libc6-dev-i386 (= 2.23-0ubuntu3) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

I have tried apt-get -f install, which returns this error:

dpkg: error processing archive /var/cache/apt/archives/libc6-dev-i386_2.23-0ubuntu3_amd64.deb (--unpack):
 trying to overwrite '/usr/include/bits', which is also in package libc6-dev-amd64:i386 2.23-0ubuntu3
Errors were encountered while processing:
 /var/cache/apt/archives/libc6-dev-i386_2.23-0ubuntu3_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

It looks like my problem is that the file is there, but for some reason it is not detected by Steam.