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.

[EX Q]: A new building needed 11 windows . The builder had already installed 4 of them . If it takes 8 hours to install each window , how long will it take him to install the rest ?
[EX A]: 56

[EX Q]: Tammy drove 55 miles in one hour . At that rate , how far can she drive in 36 hours ?
[EX A]: 1980

[EX Q]: Tom and his friend were buying trick decks from the magic shop for 8 dollars each . How much did they spend if Tom bought 3 decks and his friend bought 5 decks ?
[EX A]:
64