The conversion of euros to U.S. dollars depends on the exchange rate between the two currencies. To convert h euros per liter to U.S. dollars, you would need to know the current exchange rate and multiply it by h.
For example, if the exchange rate is 1 euro = 1.25 U.S. dollars, and h = 1 euro, then the equivalent amount in U.S. dollars would be 1.25 U.S. dollars per liter. If h = 2 euros, then the equivalent amount in U.S. dollars would be 2 * 1.25 = 2.5 U.S. dollars per liter.
It's important to note that exchange rates can change frequently, so it's best to check the current rate before making any conversions