TASK DEFINITION: You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: Rosa had 67 flowers . Andre gave her some more flowers . Now , Rosa has 90 flowers . How many flowers did Andre give to Rosa ?

SOLUTION: 23

PROBLEM: Fred has 5 baseball cards . Melanie bought 3 of Fred 's baseball cards . How many baseball cards does Fred have now ?

SOLUTION: 2

PROBLEM: There are 38 books on the shelf . Marta put 10 more books on the shelf . How many books are on the shelf now ?

SOLUTION:
48