Hello @Boris15,
Welcome to the Community Center, it is lovely to meet you. My name is Lizzie and I manage the English speaking CC here.
It is likely that this due to 'Rounding Off'. I have found an explanation of this in the Airbnb Terms and Privacy, see below an image. This article can be found on all Airbnb footers as well.

Hopefully this helps, it would be great to know. 🙂
Also, I hope you don't mind, but I have amended your title as it didn't appear to relate to you question and it will make it easier for other hosts to find the answer in the future. Do let know if you would prefer something different and I will amend.
Thanks,
Lizzie
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Thank you for the last 7 years, find out more in my Personal Update.
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