Cassie uses her phone 2 1/4 times as much as Margaret every day. If Margaret averages 1 2/3 hours of phone use per day, how much time does Cassie spend?

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?