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.

Ex Input:
For his car , Mike spent $ 118.54 on speakers and $ 106.33 on new tires . Mike wanted 3 CD 's for $ 4.58 but decided not to . In total , how much did Mike spend on car parts ?

Ex Output:
224.87


Ex Input:
Marie starts with 95 erasers . She loses 42 . How many erasers does Marie end with ?

Ex Output:
53


Ex Input:
Sara picked 6 pears and Tim picked 5 pears from the pear tree . How many pears were picked in total ?

Ex Output:

11