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.

There are 4 walnut trees currently in the park . Park workers will plant 6 more walnut trees today . How many walnut trees will the park have when the workers are finished ?
10

At Oliver 's Restaurant a group with 2 adults and 4 children came in to eat . If each meal cost 3 dollars , how much was the bill ?
18

There are 115 pencils in the drawer . Sara placed 100 more pencils in the drawer . How many pencils are now there in all ?
215