ls */

or

    ls -d */*

This would list the contents of all the non-hidden subdirectories in the current directory.  Since you only seem to have subdirectories with numeric names, this will show the contents of these.

The shell globbing pattern `*` would expand  to all non-hidden names in the current directory.  Adding a `/` at the end of the pattern forces the pattern to expand to only directories (since non-directories can't have `/` in their names).