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.
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Question: A new building needed 12 windows . The builder had already installed 6 of them . If it takes 4 hours to install each window , how long will it take him to install the rest ?

Answer: 24


Question: It took Katherine 3 hours to run to Louis 's house at 8 miles per hour . How far is it between Katherine 's house and Louis 's house ?

Answer: 24


Question: I have 80 cents to buy candy . If each gumdrop costs 4 cents , how many gumdrops can I buy ?

Answer:
20