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

Ex Input:
A waiter had 7 tables he was waiting on , with 7 women and 2 men at each table . How many customers total did the waiter have ?

Ex Output:
63


Ex Input:
At the fair there were 9 people in line for the bumper cars . If 6 of them got tired of waiting and left and 3 more got in line , how many people would be in line ?

Ex Output:
6


Ex Input:
A florist had 37 roses . If she sold 16 of them and then later picked 19 more , how many roses would she have ?

Ex Output:

40