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.

Ex Input:
A group of 3 friends went into a restaurant . The chef already had 8 chicken wings cooked but cooked 10 more for the group . If they each got the same amount how many would each person get ?

Ex Output:
6


Ex Input:
There are 5 flowers and 3 bees . How many fewer bees are there than flowers ?

Ex Output:
2


Ex Input:
Dalton wants to buy a jump rope that costs $ 7 , a board game that costs $ 12 , and a playground ball that costs $ 4 . He has saved $ 6 from his allowance , and his uncle gave him $ 13 . How much more money does Dalton need to buy the jump rope , the game , and the ball ?

Ex Output:

4