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.

Ex Input:
Zoe had 6 songs on her mp3 player . If she deleted 3 old songs from it and then added 20 new songs , how many songs does she have on her mp3 player ?

Ex Output:
23


Ex Input:
Keith loves trading cards . She bought 4 packs of Digimon cards for $ 4.45 each , and a deck of baseball cards for $ 6.06 . How much did Keith spend on cards ?

Ex Output:
23.86


Ex Input:
Nancy goes fishing with Joan . They catch 18 trout . If they equally split up the trout , how many will each one get ?

Ex Output:

9