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: For Halloween Katie and her sister combined the candy they received . Katie had 8 pieces of candy while her sister had 23 . If they ate 8 pieces the first night , how many pieces do they have left ?
Example Output: 23

Example Input: Bianca and her mom were picking carrots from their garden . Bianca picked 26 and her mother picked 15 . If only 16 of the carrots were good , how many bad carrots did they have ?
Example Output: 25

Example Input: Heather starts with 86 blocks . She shares 41 with Jose . How many blocks does Heather end with ?
Example Output:
45