Liters of gas before they removed some gas = 5,855 Liters of gas AFTER they removed some gas = 5,421 To find how much liters of gas are left, 5,855 - 5,421 = the amount of liters left in the tank The number of liters left in the tank is 434 Liters. Oh oh! WAIT! Not done yet! The question asked for MELLILETERS, But we only have liters. <em>Let's convert it!