Expected result of using these two flags at once

[abduct]

I thought that this would compute the total number of hashes in that range (1 - 10) and attempt to crack using the first 400 generated guesses and then stop.

First, dont use -s and -l with increment mode.
Second, the -s and -l are not normal password units. They are what I call KU (keyspace units). Run that command with --keyspace to know the total number of keyspace.

Alright I removed the increment from it, how does the result of --keyspace play into this. The number does not change as I change the -s or -l options so I assume this is total size for the mask.

Does this mean -s would be the starting location on that size and -l would tell it how many units to process before stopping?

What are these units? Are they hashes or something else like total number of combinations for a given length and keyspace.

Thanks for the reply.