14. (10 points) Using a batch of paper to bind a type of exercise book. If 120 books have already been bound, the remaining paper is $40 \%$ of the total; if 185 books have been bound, then 1350 sheets of paper are left. How many sheets of paper are there in total?
【Answer】Solution: $120 \div(1-40 \%)=200$ (books), $1350 \div(200-185)=90$ (sheets), $90 \times 200=18000$ sheets;

Answer: This batch of paper has a total of 18000 sheets.