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.

A farmer estimates that he will harvest 48097 bushels of wheat . The weather is perfect during the growing season , so he harvests 684 more bushels of wheat than expected . How many bushels of wheat does the farmer harvest ?
48781

Donna weighs 69 pounds . Willie weighs 51 pounds . How much heavier is Donna than Willie ?
18

Mike joined his school 's band . He bought a trumpet for $ 145.16 , and a song book which was $ 5.84 . How much did Mike spend at the music store ?

151