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.

Q: Bobby collects 2 blocks . Bobby 's father gives Bobby 6 more . How many blocks does Bobby have ?

A: 8
****
Q: Dan has $ 3 . He bought a candy bar for $ 1 . How much money is left ?

A: 2
****
Q: Joan decided to sell all of her old books . She gathered up 33 books to sell . She sold 26 books in a yard sale . How many books does Joan now have ?

A:
7
****