Human: The cost of Joe's new HVAC system is $20,000. It includes 2 conditioning zones, each with 5 vents. In dollars, what is the cost of the system per vent? Assistant: 
How many vents are there? ** Two zones with 5 vents per zone is 2*5=<<2*5=10>>10 vents.
What is the cost of the system per vent? ** Thus, the $20,000 system costs $20,000/10 = $<<20000/10=2000>>2,000 per vent.
#### 2,000