@Jill104 This may help from the Terms of Service:
Rounding Off
Airbnb Payments may, in its sole discretion, round up or round down amounts that are payable from or to Guests or Hosts to the nearest whole functional base unit in which the currency is denominated (e.g. to the nearest dollar, euro or other supported currency); for example, Airbnb Payments will round up an amount of $101.50 to $102.00, and $101.49 to $101.00.
Some currencies are denominated in large numbers. In those cases, Airbnb Payments may determine the functional base unit in which those currencies are denominated to be 10, 100 or 1,000 of the currency; the corresponding examples for such currencies would be for Airbnb Payments to round up an amount of 1,045 up to 1,050 and 1,044 down to 1,040, or 35,450 up to 35,500 and 35,449 down to 35,400, or 837,500 up to 838,000 and 837,499 down to 837,000.