There are 336 books in a library. On Monday, 124 books are taken out. On Tuesday, 22 books are brought back. How many books are there now?
How many books are left after Monday? ** At the end of Monday, there are 336 - 124 = <<336-124=212>>212 books left.
How many books are there after Tuesday? ** At the end of Tuesday, there are 212 + 22 = <<212+22=234>>234 books.
#### 234