Random math question

If Sapphire drinks 1 liter and 18 cups of coffee
and her best friend drinks 2 liters and 3 cups of coffee, Who drank more coffee and how much did they both drink together?
●= Sapphire coffee

☆=friends coffee

●+☆× ●= ?​

Random math questionIf Sapphire drinks 1 liter and 18 cups of coffeeand her best friend drinks 2 liters and 3 cups of coffee Who drank more coffee and how much class=