Slaves with Dicks that are assign to Dairy produces "NaN!" error

Expected Behavior

Slaves with dicks should produce money when assigned to the dairy

Current Behavior

This is currently bugged out with ¤0.

Also the next week will also produce the following error:

ERROR: The following variables are NaN! Please report this.
$$facility.dairy.totalIncome
$$facility.dairy.profit
$$facility.dairy.whoreIncome

Steps to Reproduce

1. Assign a slave with a dick to dairy
2. Run Next Week
3. Notice that the slave you assign doesn't actually produce any money
4. The next week when you're back to the penthouse view will fire off an error:

ERROR: The following variables are NaN! Please report this.
$$facility.dairy.totalIncome
$$facility.dairy.profit
$$facility.dairy.whoreIncome

Additional information

• Release ID: | FC version: 0.10.7.1, | mod version: 4.0.0-alpha.27, | build: 1208 |
• Commit: 0061e756
• Save: N/A (Can be reproduce in a new save)