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

Lana was unboxing some of her old winter clothes . She found 3 boxes of clothing and inside each box there were 3 scarves and 4 mittens . How many pieces of winter clothing did Lana have total ?
21

At a restaurant each adult meal costs $ 7 and kids eat free . If a group of 13 people came in and 9 were kids , how much would it cost for the group to eat ?
28

During 1 year , the Wagners ' real estate bill included 600 dollars for local schools . Of this amount , 150 dollars went to the high school district . What percent did the Wagner family pay to the high school district ?

25