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]: mark dean 's friend decided to go for a boat ride . if the ride costs $ 8 for every mile and they travelled for 40 miles how much would the ride cost mark ?
[EX A]: 320

[EX Q]: a sandbox is 312 centimeters long and 146 centimeters wide . how many square centimeters of ground does the sandbox cover ?
[EX A]: 45552

[EX Q]: amanda and her friends decided to go to an amusement park for the weekend . the nearest amusement park from their city is super fun-tastic land . if they cover a distance of 27 miles for every hour of travel and they travelled for 3 hours how far is sfl from the city ?
[EX A]:
81