Conversion of currencies

The steps of the conversion:

1. Net price and exchange rate are multiplied.
2. The result is rounded to two decimal places.
3. To get the 'total net' price, the rounded number is multiplied by the quantity.
4. The VAT is converted on the basis of the total net price (from point 3).
5. The result is rounded to two decimal places.
6. To get the total due > Total net price and VAT are summed.

An example:
Net price 27 USD
Quantity: 3
Exchange rate: 1USD=0.840054 EUR
VAT: 23%

1. 27 USD x 0.840054 EUR = 22,681458 EUR

2. 22,68 EUR

3. 22,68 EUR x 3 = 68,04 EUR

4. 68,04 EUR x 23% = 15,6492 EUR

5. 15,65 EUR

6. 68,04 EUR + 15,65 EUR = 83,69 EUR