You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Example: for a birthday party cody bought 30 regular sodas and 5 diet sodas . How many sodas are there ?
Example solution: 35
Example explanation: total sods = 30+5 = 35

Problem: james had 39 stickers . he got some more stickers for his birthday . then he had 61 stickers . how many stickers did james get for his birthday ?

Solution: 22