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: Roadster 's Paving Company used 10 tons of cement to pave Lexi 's street and 5.1 tons of cement to pave Tess 's street . How much cement did Roadster 's Paving Company use in all ?
Example Output: 15.1

Example Input: Emily was playing a video game and had 42 lives . In a hard part of the game she lost 25 lives . If she got 24 more lives in the next level , how many lives would she have ?
Example Output: 41

Example Input: Lisa starts with 91 bananas . Maria gives Lisa 8 more . How many bananas does Lisa end with ?
Example Output:
99