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

[EX Q]: There were 10 friends playing a video game online when 7 players quit . If each player left had 8 lives , how many lives did they have total ?
[EX A]: 24

[EX Q]: Mrs. Hilt saw a rollercoaster . 7 students rode the rollercoaster every 5 minutes . How many students rode the rollercoaster in 15 minutes ?
[EX A]: 21

[EX Q]: Megan had 93 files on her computer . She deleted 21 of them and put the rest into folders with 8 files in each one . How many folders did Megan end up with ?
[EX A]:
9