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.

Q: Jason joined his school 's band . He bought a flute for $ 142.46 , a music stand for $ 8.89 , and a song book for $ 7 . How much did Jason spend at the music store ?

A: 158.35
****
Q: Josh had 16 marbles in his collection . He lost 7 marbles . How many marbles does he have now ?

A: 9
****
Q: Sean has 223 whistles . He has 95 more whistles that Charles . How many whistles does Charles have ?

A:
128
****