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.

Example Input: Josh had 16 marbles in his collection . He lost 7 marbles . How many marbles does he have now ?
Example Output: 9

Example Input: After a party , 0.625 of the cake is left over . That night , big brother eats 0.25 of the cake . How much is left over after that ?
Example Output: 0.375

Example Input: At the arcade Victor won 46 tickets . If he spent 27 tickets on a beanie and later won 39 more tickets , how many would he have ?
Example Output:
58