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: Bianca had 45 coloring books . If she gave away 6 of them , but then bought 20 more , how many would she have total ?

SOLUTION: 59

PROBLEM: 64 children were riding on the bus . At the bus stop , some more children got on the bus . Then there were 78 children altogether on the bus . How many children got on the bus at the bus stop ?

SOLUTION: 14

PROBLEM: On the first day of the week Pat had 39 stickers . Pat earned 22 more during the week . How many stickers did Pat have at the end of the week ?

SOLUTION:
61