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.

Mrs. Hilt saw a rollercoaster . 7 students rode the rollercoaster every 5 minutes . How many students rode the rollercoaster in 15 minutes ?
21

There are 397 butterflies . Each butterfly has 12 black dots and 17 yellow dots . How many black dots are there in all ?
4764

Katie had 7 pages of math homework and 3 pages of reading homework . If each page had 9 problems on it , how many problems did she have to complete total ?

90

