A publisher published 83034 books in the year 1999, 41011 books in 2000, 55815 books in 2001 and 33310 books in 2002. How many books were published in total over these four years?
A bag contains some pencils and erasers. There are 23 pencils and 6 times as many erasers as the number of pencils in the bag. How many erasers are there in the bag?