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:
58 children are taking a bus to the zoo . they sit 2 children in every seat . how many seats will the children need in all ?

Ex Output:
29


Ex Input:
she also tried to get to know the teachers in the school . she found out that there are 7 departments in the school and each department has 20 teachers . how many teachers are there in total ?

Ex Output:
140


Ex Input:
kim has 4 cousins . she wants to give each one 5 pieces of gum . how much gum will she need ?

Ex Output:

20