file_stat

$ cat A9E27.txt

person,42%

person,60%

$ cat ffn2eG6.txt

train,85%

etc etc

how can I create a file that is like this

1, A9E27.txt, person,42%, person,60%

2, ffn2eG6.txt, train,85%

3, ...

 

where 1 shows the file number when I sort my file names alphabetically something like ls -1 | sort

and A9E27.txt is the file name, and each line of file contents comes in front of it separated by comma