Child Support Calendar

My daughter has now graduated from HS and starts college in a few weeks. I am trying to figure out what the child support will now be but not sure what to enter into the Child Support Calc. We have two kids (16 & 18). Not sure if I still enter two as the number of kids since one will now not be living at either home but her health ins will still be picked up by my ex as a part of the family plan. Hope someone can offer some help. Numbers are (my salary $105,000, Ex salary: $50,000, Health Ins for ex and two kids $230 per month). Thanks