There are 14 errors in the use of punctuation marks in the following text. Correct them: A mathematician and a farmer were on a train journey as they passed a flock of sheep in a field the mathematician announced confidently, Therere seven hundred and ninety seven sheep out there." The farmer said, "Thats incredible it so happens I know the owner and that figure is exactly right but how did you count them so quickly" The mathematician said "Easy I just counted the number of the legs and divided it by four."