You are given a math word problem and you are supposed to apply an addition mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

[EX Q]: Context: A book has 3 chapters. The first chapter is 66 pages long the second chapter is 35 pages long and the third chapter is 24 pages long. 

 Question: How many pages does the book have altogether?
[EX A]: 125

[EX Q]: Context: After eating a hearty meal they went to see the Buckingham palace. There, Rachel learned that 512 visitors came to the Buckingham palace that day. If there were 471 visitors the previous day and 808 visitors the day before that 

 Question: How many visited the Buckingham palace within the past 89 days?
[EX A]: 1791

[EX Q]: Context: Ed had 24 more marbles than Doug. Doug lost 27 of his marbles at the playground while Ed found 9 more marbles. 

 Question: How many more marbles did Ed have than Doug then?
[EX A]:
60