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:
In 1986 , there were 1125 students in Central High School . The number of students enrolled in 1987 was 4 % less than in 1986 . How many students were enrolled in 1987 ?

Ex Output:
1080

Ex Input:
There are 48 erasers in the drawer and 30 erasers on the desk . Alyssa placed 39 erasers and 45 rulers on the desk . How many erasers are now there in total ?

Ex Output:
117

Ex Input:
A pet store has 4 bird cages . If each cage has 8 parrots and 2 parakeets in it , how many birds does the pet store have total ?

Ex Output:
40