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:
Jessica grew 35 watermelons and 30 carrots , but the rabbits ate 27 watermelons . How many watermelons does Jessica have ?

Ex Output:
8


Ex Input:
Daniel had some noodles . He gave 12 noodles to William . Now Daniel only has 54 noodles . How many noodles did Daniel have to begin with ?

Ex Output:
66


Ex Input:
Wendy 's old washing machine could only wash 8 pieces of clothing at a time . If she had to wash 39 shirts and 33 sweaters how many loads would she have to do ?

Ex Output:

9