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:
Ned was trying to expand his game collection . He bought 11 games from a friend and bought 22 more at a garage sale . If 19 of the games did n't work , how many good games did he end up with ?

Ex Output:
14


Ex Input:
In March it rained 0.81 inches . It rained 0.35 inches less in April than in March . How much did it rain in April ?

Ex Output:
0.46


Ex Input:
Marie starts with 95 erasers . She loses 42 . How many erasers does Marie end with ?

Ex Output:

53