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).