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: On Friday , Sam spent 2 pennies on ice cream . The next day , Sam spent 12 dimes on baseball cards . All in all , how much money did Sam spend ?
Example Output: 1.22

Example Input: While making pastries , a bakery used 0.2 bag of wheat flour and 0.1 bag of white flour . How many bags of flour did the bakery use in all ?
Example Output: 0.3

Example Input: A pet store had 41 siamese cats and 28 house cats . During a sale they sold 15 cats . How many cats do they have left ?
Example Output:
54