Unix Split Command Help

I want to split a csv file by number of rows.

$ split -l 50000 myfile.csv newfile-*.csv

Is it possible to get the suffix added where I add a wildcard?

If I run the following command

$ split -l 50000 myfile.csv newfile-0.csv

I would get the following output


newfile-0.csvaa
newfile-0.csvab
....
newfile-0.csv.cd

How can I get the suffix to be where I want it before the .csv extension?