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: Carol and her mom were picking carrots from their garden . Carol picked 29 and her mother picked 16 . If only 38 of the carrots were good , how many bad carrots did they have ?

Output: 7


Input: Consider Input: While on vacation , Rachel took 6 pictures at the zoo and 9 at the museum . If she later deleted 11 of the pictures , how many pictures from her vacation did she still have ?

Output: 4


Input: Consider Input: Debby 's class is going on a field trip to the zoo . If each van can hold 4 people and there are 2 students and 6 adults going , how many vans will they need ?


Output: 2