You are given a math word problem and you are supposed to apply multiple mathematical operators like addition, subtraction, multiplication or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

Example Input: Isabel baked 39 cupcakes for her school 's bake sale . If her brother , Todd , ate 21 of them how many packages could she make if she put 3 cupcake in each package ?
Example Output: 6

Example Input: Jason joined his school 's band . He bought a flute for $ 142.46 , a music tool for $ 8.89 , and a song book for $ 7 . How much did Jason spend at the music store ?
Example Output: 158.35

Example Input: After eating at the restaurant , Sally , Sam , and Alyssa decided to divide the bill evenly . If each person paid 45 dollars , what was the total of the bill ?
Example Output:
135