before the exam, Angela goes to Starbucks and orders her usual Venti Hot Chocolate $($which mainly water$)$ and asks the barista to add exactly $5$ ice cubes that are roughly $20$ grams each. $($So that Angela doesn't burn her tongue and spend the entire exam worrying about whether or not she needs to seek medical attention, which would be a major distraction$).$ If Starbucks makes their Hot Chocolate at a temperature of $75C,$ they keep their ice cubes in a $-10C$ freezer, the cup is perfectly insulated, and the final temperature of her hot chocolate was $30C$ after all the ice had melted, how much hot chocolate $($in milliliters$)$ did Starbucks give Angela?