You can adjust the display of decimal places in the currency settings. Navigate to the "Modules" -> "Currencies" page and access the editing menu:
In the "Decimal Point" field, you can indicate the symbol that separates the integer part from the fractional part of a price. Usually, it's a comma - for example, 20,25 UAH.
In the "Decimal Places" field, you specify the number of digits after the comma that you want to display in the prices on your site. For instance, if the price is 100,25 UAH and you set the decimal places to 1, you will see 100,3 UAH - one digit after the comma, rounded to the nearest tenth.