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.

Input: Consider Input: Kylie was collecting coins . She got 15 coins from her piggy bank and 13 coins from her brother . Her father gave Kylie 8 coins . Kylie gave 21 of the coins to her friend Laura . How many coins did Kylie have left ?

Output: 15


Input: Consider Input: A store had 5 oranges in a bin . If they threw away 2 of the old ones and put 28 new ones in the bin how many would be in the bin ?

Output: 31


Input: Consider Input: Robin had 30 songs on her mp3 player . If she deleted 8 old songs from it and then added 10 new songs , how many songs does she have on her mp3 player ?


Output: 32