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.

A new building needed 14 windows . The builder had already installed 5 of them . If it takes 4 hours to install each window , how long will it take him to install the rest ?
36

Sandy has 8 dozen books . Fred has 5 times more books than Sandy . How many books does Fred have ?
480

Your class is having a pizza party . You buy 5 pizzas . Each pizza has 4 slices . How many slices is that altogether ?

20