Please help! - install unity hub

i want to run unity3d on my xavier nx
but i met error installing package ‘lib32stdc++6’

kkm@kkm-desktop:~$ sudo apt install lib32stdc++6
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package lib32stdc++6
E: Couldn’t find any package by regex ‘lib32stdc++6’

How do i solve this problem??

It looks to be an 32-bit package? Not sure but you may need to install 64-bit package, since it is 64-bit system. Other users may have experience and can share suggestion.