Given a math word problem, answer the following question. You might need to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the question and then only report the final numerical answer.

while playing a video game victor lost 14 lives . now he has 2 lives . what 's the difference between the number of the lives that victor lost and now ?
12

a clown had 16 balloons . he gave 4 away at a party . what 's the difference between the number of balloons the clown had in the beginning and he gave away at a party ?
12

adam had 33 books . if he sold 11 of them and used the money he earned to buy 23 new books how many books would adam have ?

45

