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.

Input: Consider Input: Joan 's cat had 8 kittens . She gave 2 to her friends . How many kittens does she have now ?

Output: 6


Input: Consider Input: Brad has 17 balloons . 8 balloons are red and the rest are green . How many green balloons does Brad have ?

Output: 9


Input: Consider Input: Tom bought a skateboard for $ 9.46 , and spent $ 9.56 on marbles . Tom also spent $ 14.5 on shorts . In total , how much did Tom spend on toys ?


Output: 19.02