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.

Ex Input:
There are 7 students in the class and 56 eggs . If the eggs are divided equally among the students , how many does each student get ?

Ex Output:
8


Ex Input:
Robin had 18 pieces of gum . Her brother gave her some more pieces . Now Robin has 44 pieces in all . How many pieces of gum did Robin 's brother give her ?

Ex Output:
26


Ex Input:
Mrs. Hilt had 15 cents . She bought a pencil for 11 cents . How much money did she have left ?

Ex Output:

4