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

Input: Consider Input: The value of a sport utility vehicle this year is 16000 dollars , which is 0.8 of what its value was last year . How much is the value of the vehicle last year ?

Output: 20000


Input: Consider Input: There were 27 boys and 35 girls on the playground at recess . How many children were on the playground at recess ?

Output: 62


Input: Consider Input: Dan has 64 violet marbles , he gave Mary 14 of the marbles . How many violet marbles does he now have ?


Output: 50