1. There are 19 cakes. Each cake is cut into 6 parts. Each part is further cut into 2 pieces. How many cake pieces are there in all?   2. The Professors at the State University drank 207 cups of tea yesterday. They drank 48 cups in the morning and 96 in the afternoon. How many did they drink in the evening?   3. Robin has a collection of 102 books. He donated 13 books last year and 27 books this year. How many books does he still have?   4. A school has 2 dining halls. Each dining hall has29 tables. If there are four children to each table, how many children stay for lunch?   5. Last month, Jack worked for 181 hours, Greg worked for 144 hours, and Edward worked 26 hours more than Jack. How many hours did they work altogether?