At a farm, a crate of fruits can hold 27 bananas. If a farm worker can fill 10 crates in a day, and the farm has 37 farm workers, how many bananas can be packed into crates in 5 days?

The students in your school decided to collect old books to donate to schools in villages around the country. During the year they collected a lot of books, and were able to donate 326 books to 325 schools each. If there are 25 students in your class and each student in your class collected 34 books, then how many books were collected by the students of other classes?

NOTE: Assume that the value of "pi" (ratio of the circle's circumference to diameter) is 3. If the radius of a circle is 93.1mm then what is the circumference of that circle?