@Abby43, no they don't multiply the nights by the number of guests.
That is very strange.
I have heard that AirBnB was having some glitches related to the reports. Perhaps this is a manifestation of that? Obviously you could not have hosted 152 nights in just 2 months.
You can try to contact AirBnB support about it. If you do, you might want to share some screenshots of the mismatched information.
BTW, are you talking about an earnings report you exported, or just the Earnings tab of the Progress page?