You are given a math word problem and you are supposed to apply a single mathematical operator 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.

Example Input: lexie has a lot of art materials . she needs to organize all these materials into containers . she counted her crayons and found out that she has 80 crayons which she will place in crayon boxes . every crayon box can contain 8 crayons . how many crayon boxes does she need ?
Example Output: 10

Example Input: tyler an animal rights advocate decided to build his own animal sanctuary to protect different animals from poachers . the sanctuary was divided into different regions . the first region to be built was a bird sanctuary . initially he had 29 endangered bird species on that region . if each species has 7 pairs of birds how many pairs does he have in total ?
Example Output: 203

Example Input: there were 10 students riding on the school bus . at the first stop 3 students got off of the bus . how many students are left on the bus ?
Example Output:
7

