Ok, I read a bunch of wiki descriptions and am still confused about how the range of a ship is determined.

Lets me me start with one basic thing I was noticing while trying to build a ship.

So, I load the custom ship builder. Pick a hull(Medium)

In the Lower Right hand corner I see "Range : 0.1 sct"

Now I go to add a support module. Lets pick "Basic Support Module Range : 0.4pc"

After added In the Lower Right hand corner I see "Range : 0.7 sct"

If I clear all, and add the "General Life support 0.5 pc". that LR corner value goes to "Range : 0.8 sct"

If I clear all, and add the "Extended support 0.7 pc". that LR corner value goes to "Range : 0.9 sct"

Trying to understand what math is being used here.

 Thanks, I have all sorts of other confusions in this, but I thought I would keep the question focused on one thing.